Tag Archives: explorer

Science / Space Race

[September 6, 1964] New Stars in the Sky (Explorer 20, Nimbus, and OGO-1)

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by Kaye Dee

I love watching satellites — and it seems like every week now there are new stars in the sky as more satellites are launched to help us learn more about outer space and the Earth itself. Just in the past two weeks, we’ve seen three new satellites dedicated to discovering more about the Earth’s atmosphere and the way it works.

Explorer-XX: Topside Down

The first of the recent launches was Explorer-XX, finally orbited on 25 August from Vandenberg Air Force Base in California after problems with its Scout X-4 booster that took many months to resolve. Explorer-XX has a string of aliases: it’s also known as Ionosphere Explorer IE-A, Ionosphere 2, Science S-48, Topside-sounder, TOPSI and Beacon Explorer BE-A! Underneath all those monikers, it’s the latest in the series of scientific research satellites that began with America’s first satellite, Explorer-I, back in 1958.


Explorer-XX under construction

Explorer-XX’s main purpose is to act as a topside sounder, which means that it takes measurements of the ion concentration within the ionosphere from orbit above it. This data can then be compared with measurements taken from the ground. Since the ionosphere is what makes global radio communications possible, understanding its composition and characteristics is important to scientific and defence research, as well as international radio telecommunications operators.

Unlike some satellites, Explorer-XX doesn’t have an onboard tape recorder, so it can only transmit data when it’s in range of a ground station. One of those ground stations happens to be just outside the Woomera Rocket Range, at NASA’s Deep Space Instrumentation Facility at Island Lagoon. Island Lagoon is actually a dry salt-lake (and not a bad picnic spot for a nice Sunday outing from Woomera Village), and its shores proved to be an ideal location for NASA’s first deep space tracking station outside America. Last year, the Minitrack radio-interferometry tracking system that was originally installed on Woomera’s Range G to support satellite tracking during the International Geophysical Year, was moved to the Island Lagoon site. Minitrack is part of NASA’s Satellite Tracking and Data Acquisition Network and it can receive the Explorer-XX data. Some of the sounding rocket work out at Woomera also involves taking ionospheric soundings for defence and civilian scientific research, so I’m sure my colleagues at WRE will soon be incorporating the data from Explorer-XX into their research as well.


NASA's Minitrack station at Island Lagoon, near Woomera – one of the data receiving stations for Explorer-XX

Following in Canada's Footsteps

Explorer-XX is only the second topside sounder ever launched. The first was Alouette-1, Canada’s first satellite, which went into orbit almost exactly two years ago and is still in operation. Alouette-1, by the way, was part of a program in which the United States generously offered to launch satellites for other countries. Great Britain and Canada have already had their first satellites launched this way, and Italy will soon have a satellite launched by NASA as well. Australia had an invitation to take part in this project, too, but while I was working for the WRE, I heard that our government had rejected the offer on the basis that the country couldn’t afford it — which is pretty short-sighted thinking, if you ask me!

Canadian scientists celebrating the launch of their first satellite-Alouette-1. Wish there was a picture of Australian scientists doing the same.

Nimbus-1: Second-Generation Weather Satellite

Even if the Australian Government lacked the vision to take up America’s offer of a satellite launch, it is interested in taking advantage of the practical ways in which satellite can benefit the country. Last month, I mentioned Australia’s intention to be part of the INTELSAT communications satellite consortium, and our Bureau of Meteorology is fast becoming a major user of weather satellites. Its ground station was one of 47 outside the United States to receive live weather images broadcast directly from space from the TIROS-8 weather satellite launched last December. Some test transmissions were received from TIROS-8 on Christmas Day, just a few days after its launch, and images have been regularly received since January 7 this year.

Now, the first of a new weather type of weather satellite is in orbit, from which Australia is also receiving data. Nimbus-1 (aka Nimbus-A) was launched from Vandenberg just a few days after Explorer-XX, on August 28. It’s now in polar orbit, more eccentric than desired because of a short second-stage burn, but all its instruments are functioning and ground stations are receiving regular data.


Some people think Nimbus-1 looks like a butterfly, though it reminds me of an ocean buoy with solar panels attached either side!

Like TIROS-8, Nimbus-1 can transmit live cloud images from orbit using the Automatic Picture Transmission instrument. This television system is designed to photograph an area of 800 miles square, which is the largest field of view to date. The pictures are transmitted using a slow-scan system of four lines per second, similar to the way radio photographs are sent. Each ground station is designed to receive three pictures per orbit. Nimbus can also store data on board and retransmit it later if it is not in range of a ground station. But what makes Nimbus-1 different from TIROS-8 is that its High-Resolution Infra-red Radiometer enables it to take images at night and measure the night-time radiative temperature of cloud tops and the Earth’s surface, so that data is being acquired all day, every day.


Here's a diagram of Nimbus-1 showing its main components and instruments.

On its first day in orbit, Nimbus took a picture of Hurricane Cleo as it travelled north along the US east coast after devastating parts of the Caribbean and Florida. This really demonstrates that with the data and images from the TIROS and Nimbus satellites, the Bureau of Meteorology will now be able to reliably track the development of conditions over the Pacific, Southern and Indian Oceans that determine the weather across different parts of Australia. The poet Dorothea Mackellar didn’t call Australia the “land of droughts and flooding rains” for nothing, but weather satellites will undoubtedly improve the forecasters’ abilities to see when these weather conditions are coming!


Hurricane Cleo imaged by Nimbus-1. Its strike on Florida delayed the launch of the Gemini-2 unmanned test flight.

Orbiting Geophysical Observatory-1: A New Design Paradigm

Just two days ago, 5 September (Australia time), NASA’s third recent satellite was launched. This time it was the Orbiting Geophysical Observatory, or OGO-1, the first of a series of satellites that is intended to study the atmosphere, magnetosphere and the space environment between the Earth and the Moon, making sure that it will be safe for the Apollo astronauts to traverse this region of space.


This philatelic cover marking the launch of OGO-1 highlights its role in manned spaceflight safety.

OGO-1 is the largest and most complex scientific satellite that NASA has launched to date. With the OGO series, NASA is taking a new approach to satellite design. Until now, each satellite has been designed to accommodate the instruments and experiments that it would carry. However, with OGO, the satellite design is fixed and the experiments are tailored to fit the satellite. Each satellite will carry about 20 experiments.


Diagram of the universal OGO bus that will be used for all the satellites in the series.

OGO-1 has been placed into a highly elliptical orbit with an apogee of almost 93,000 miles, and the plan is for future OGO missions to alternate between this type of orbit and low polar obits. At 31° inclination (its angle with respect to the equator), the OGO series needs additional tracking stations to supplement NASA’s STADAN network. One of these support stations will be established next year in Darwin, in the Northern Territory, as an outstation of the STADAN station at Carnarvon. This facility is part of the NASA Carnarvon tracking station that I mentioned in my last article, which is a prime tracking station for the upcoming Gemini missions.

Unfortunately, one of OGO-1's long booms and one of its short booms did not properly deploy. As a result the satellite used up most of its stablisation-thruster fuel attempting to lock the satellite into its Earth-stabilised orbit. For the moment, scientists have decided not to turn on any of OGO-1's instruments while they work out ways to operate it as a spin-stablised satellite. Let's hope they succeed as this satellite and its successors promise a wealth of new data on the near-space environment.


OGO-1's deployment from its folded launch configuration to its operational configuration is rather complex. I guess it's not surprising that this new satellite has had some problems in properly unfolding!

It’s exciting to see so many new space missions occurring and knowing that, through the tracking stations around the country (managed by the WRE on NASA’s behalf and operated by local engineers and technicians) Australia is playing its part in the exploration and peaceful use of outer space. I can scarcely wait to see what goes up next month!




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Science / Space Race

[April 10, 1964] Piercing the night (Gemini, Zond, Kosmos 28, and Explorer 9)

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by Gideon Marcus

After what felt like a pause in the Space Race, things have now het up, and I'm getting excited abouting being on the NASA beat again.  To wit, both superpowers seem on the cusp of making a giant leap forward in the exploration of the great black unknown.

Two for the Price of One

It has been nearly a year since the Mercury program wrapped up.  Since then, NASA has been feverishly working on its Apollo lunar program, comprising the Saturn rocket, the three seat Command/Service Module, and the two seat Lunar Excursion Module.  We finally got a peek at a full scale mock-up of the last, and it's unlike any spacecraft I've ever seen before.

Even while NASA is progressing with Apollo, the space agency has also been proceeding with its Gemini two-seat spacecraft.  Gemini is a sort of bridge to Apollo, a direct successor to Mercury that will allow astronauts to perfect the techniques of orbital rendezvous and docking.  It is also likely that the Air Force will use Gemini to build a staffed space station and perhaps for other military purposes.

On April 8, 1964, the first Gemini soared into orbit atop a modified Titan II ICBM.  There was no one on board, but the flight was still an important one.  Using missiles borrowed from the Air Force is always a dicey proposition — they aren't designed to carry people, after all.  I am happy to report, however, that the new rocket did its job just about perfectly, delivering Gemini 1 to an orbit just slightly higher than planned.

The uncrewed spacecraft fell silent after its first orbit when the battery became exhausted, a planned occurrence.  In fact, no plans were ever made for recovery; the Titan second stage was left attached to the spacecraft, and holes were drilled into Gemini's heat shield to ensure it completely burns up when its orbit decays about two days from now.

This launch marks an important first step for Gemini.  The Titan II, a much simpler and stronger rocket than Mercury's Atlas, is now "man-rated."  It only remains for the capsule itself, to get the same certification.  That should happen with the Gemini 2 mission, planned for late this year. 

In any event, it's another "first" for America — we got the first two-seat ship into orbit!

Destination Unknown

The Soviet Union beat us to the moon in 1958 with Mechta, and they almost beat us to Mars last year, too (their craft went silent along the way).  Now, it looks like they're setting the stage for another deep space endeavor.

On April 2, 1964, the Russkies launched Zond 1 "for the purpose of developing a space system for distant interplanetary flights."  It left orbit, and TASS continues to report that Zond is functioning properly.  However, they are being extremely cagey about where the spacecraft is going.  Experts suggest that it might be a Venus probe based on its launch date and trajectory.  I suppose it could also be a long range mission with no planetary target like Pioneer 5 was.

Two days later, on April 4, the Soviets launched Kosmos 28, an orbital satellite "intended for the further exploration of outer space in accordance with the program announced by TASS March 16, 1962." 

Which is to say, probably a spy satellite like our own Discoverer program.

The Balloon Goes Down

Yesterday, we bade a fiery farewell to Explorer 9, the first of six planned 12-foot balloon satellites whose task is to measure the density of the top of Earth's atmosphere.  The satellite confirmed the daily bulge in the upper atmosphere caused by the sun's heating the air during the day, and it also verified the model of the region's temperature, established by prior satellites. 

Moreover, the satellite lasted long enough that its data could be compared to that of its identical successor, Explorer 19, which is still up there.

Explorer 9 was the first satellite to be launched by the Scout solid-fuel rocket and the first to be launched into orbit from Wallops Island in Virginia.  Ya did good, pal!

[Come join us at Portal 55, Galactic Journey's real-time lounge!  Talk about your favorite SFF, chat with the Traveler and co., relax, sit a spell…]




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Book, Magazine, Science / Space Race

[December 21, 1963] Soaring and Plummeting (January 1964 Fantasy and Science Fiction)

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by Gideon Marcus

[Time is running out to get your Worldcon membership!  Register here to be able to vote for the Hugos.]

The Balloon goes Up

It's been something of a dry patch for American space spectaculars, and with projects Gemini and Apollo both being delayed by technical and budgetary issues, it is no wonder that NASA is hungry for any positive news.  So you can excuse them for trumpeting the launch of Explorer 19 so loudly — even if the thing is just a big balloon.  How excited can anyone get about that?

As it turns out, plenty excited.

Explorer 19, launched December 19, 1963, is a spherical balloon painted with polka-dots (they keep the sun from making it too hot or cold), and what it does is measure the atmosphere as it circles the Earth.  Not with any active instruments, but just by moving.  All orbiting spacecraft have an ideal route, one determined by Newton's laws.  If there were no air at all up there, the satellite would just keep orbiting in the same path forever (though the Moon and the Sun exert their own influences).  But there is air up there.  To be sure, the "air" up above 600 kilometers in altitude is hardly deserving of the name — it's a harder vacuum than we can make on the ground!  Nevertheless, the stuff up there is denser than what is found in interplanetary space, and we can tell its density from the slow slip of Explorer 19 in its orbit. 

If we want to know what kind of science we'll get from Explorer 19, all we have to do is look to Explorer 9.  Launched two years ago, it is a virtual twin.  Both Explorers were launched from cheap, solid-fuel Scout rockets.  Both have tracking beacons that failed shortly after launch.  The only way to get any data from these missions is to track the satellites by sophisticated cameras.

Explorer 9 has already contributed immensely to our knowledge of Earth's upper atmosphere.  Thanks to constant photographic tracking of the satellite, scientists have seen the expansion of the atmosphere as it heats up during the day as well as shorter term heating from magnetic storms in the ionosphere.  As a result, we are getting a good idea of the "climate" on the other side of the atmosphere over a wide range of latitudes. 

This is not only useful as basic science; the folks who launch satellites now have a better idea how long their craft will last and the best orbits to shoot them into, saving money in the long run.  It is one of the many examples of how the exploration of space bears immediate fruit and also extended benefits.

And that's something to be excited about!

The other shoe drops

On the other hand, the January 1964 Fantasy and Science Fiction begins the year on the wrong foot.  It is yet another collection of substandard and overly affected tales (leavened by a few decent pieces that somehow manage to get through), something like what Analog has become, though to be fair, I'm really looking forward to Analog this month. 

But first…

Pacifist, by Mack Reynolds

The best piece of the month is Pacifist by the prolific, seasoned, and (on occasion) excellent Mack Reynolds.  On a world much like ours, but where the balance of power is held between the north and south hemispheres, an anti-war group determines that the only way to curb our species' bellicose tendencies is to frighten the war-wagers with violence.  But can you really quench fire with fire?

It works because of the writing, something Reynolds never has trouble with.  Four stars.

Starlight Rhapsody, by Zhuravleva Valentina

This curious piece, in which a young woman astronomer discerns intelligent signals being broadcast from the nearby star, Procyon, originated in the Soviet Union.  It was then translated into Esperanto, of all languages, and then found its way into English.  The result is…well, I'll let our Russian correspondent give us her thoughts:


by Margarita Mospanova

In Russian, Starlight Rhapsody is actually a very pretty story — melodic and full of poetry, literally and metaphorically. It’s fairly melancholy, with just a touch of underlying Soviet optimism, nothing too garish in this case. But the translation…

Man, the translation makes me want to tear my hair out. It’s awful. It misses entire paragraphs of text as well as actual poems in the beginning and in the end. And the prose itself in no way resembles the original. Hell, it’s as if the translator used some kind of computerized translation device and just removed the grammatical mistakes afterwards. I’m really disappointed because the original story is really unexpectedly good.


by Gideon Marcus

You can get a glimmer of the story's original strength even from the twice-butchered version that editor Davidson provides.  Thus, three dispirited stars.

The Follower, by Wenzell Brown

Witness the perfect match: A milquetoast who decides to make his mark on society by stalking someone, and a paranoiac who only finds satisfaction when someone really is after him.  But their game develops a twist when their twin psychoses create a third player combining the worst aspects of both.

Sounds intriguing, doesn't it?  If it were better done or more profound in its revelation, it might have been.  As is, it straddles the line between two and three stars, leaning toward the former.

The Tree of Time (Part 2 of 2), by Damon Knight

The conclusion of last month's adventure, in which a not-quite-man from the future is abducted from our time by frog people from his and then left to die in an experimental dimension ship.

After a reasonably thrilling beginning, the book reverts to what it was from the start — a pointless pastiche of the worst elements of science fiction's "Golden Age."  Deliberate or not, it's no less unreadable for it.

One star.  Feh.

Thaw and Serve, by Allen Kim Lang

Lang explores an interesting idea: hardened criminals are quick-frozen and deposited two centuries into the future.  It is the ultimate passing of the buck.  Turns out the future doesn't know what to do with them either, choosing to dump them in the wilds of Australia.  There, they fight it out for the televised amusement of the future-dwellers.

Written and plotted with a heavy hand, it's not one of Lang's better works.  In fact, the best thing about the story is the biographical preamble (Lang's middle name was given to him by Koreans during the war).

Two stars.

Nackles, by Curt Clark

"Curt Clark" (I have it on good authority that it's actually Donald Westlake) offers up the chilling story of the creation of a deity.  In this case, it's Santa Claus' dark shadow, the child-abducting "Nackles," who is caused to exist the same way as any other god — through widespread promulgation of belief.

Deeply unpleasant, but quite effective.  Three stars (four if this is your kind of thing).

Round and Round and …, by Isaac Asimov

At long last, I finally understand the concept of the "sidereal day," as well as the length of such days on other planets.  Thank you, Doctor A!  Four stars.

The Book of Elijah, by Edward Wellen

If you haven't read First and Second Kings (or as the uninitiated might call them, "One and Two Kings"), Elijah was a biblical prophet, passionate in his service of the Lord, who ascended to Heaven in flame and is due to return just before the End Times.  Ed Wellen, best known for his "funny" non-fact articles in Galaxy, writes about what happens to Elijah during his sojourn off Earth.

The Book is written in pseudo-King James style and is about as fun as reading the Bible, without any of the spiritual edification.  One star.

Appointment at Ten O'Clock, by Robert Lory

Last up, we have the tale of man with just ten minutes to live…over and over and over again.  Ten O'Clock has the beginning of an interesting concept and some deft writing, but it is short-circuited in execution.  It reads like the effort of a promising but neophyte author (which, in fact, it is — this is his second work).  Three stars.

This is what the once proud F&SF has been reduced to: a lousy Knight serial (shame, Damon!), a disappointing translation, some bad little pieces, and a couple of bright spots.  And Asimov's column, which I read, even if few others seem to.

Oh well.  I've already paid for the year.  Might as well see it through.

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Conventions/Performances, Magazine, Science / Space Race

December 1, 1963 Last stop (December 1963 Analog)

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by Gideon Marcus

LosCon in Los Angeles!

It's been an exciting November for the Journey.  After a sad interlude on the East Coast, which saw the untimely death of our President, we flew back to Los Angeles for a small science fiction convention put on by the Los Angeles Science Fiction Society.  It was great fun, a real class act.  Not only did we get to put on a show (in which the assassination, of course, featured prominently), but we also met Laura Freas, wife of Kelly Freas, the illustrator who painted Dr. Martha Dane.  As y'all know, Dr. Dane graced our masthead until very recently, and she remains the Journey's avatar.

And for those of you who missed the performance, we got it on video-tape.

At last, success for NASA

I read an article in Aviation Weekly that noted that 1963 just hasn't been a great year for NASA space shots.  There have only been eight successful missions thus far.  Unlike in the old days (you know, five years ago), when satellites didn't fly because of balky rockets, now missions are more likely to be delayed for lack of funding on the ground or for thorny technical issues as mechanisms get more complicated.

But successes do happen, and on November 27, Explorer 18 soared into orbit.  Also known as the Interplanetary Monitoring Platform (IMP), it is essentially a deep space explorer.  At the closest point in its orbit, it zooms at an atmosphere-scraping 160 kilometers in altitude, but at its furthest, it flies up to a quarter million kilometers out — more than halfway to the moon.

IMP is the first of seven satellites that will monitor the sun's output over a long period of time, measuring its ups and downs over the course of its 11 year activity cycle.  It will also measure interplanetary magnetic fields, the speed and composition of the solar wind, and the strength of the cosmic rays that shower the solar system from intergalactic space.

In many ways, Explorer 18 continues the missions of Explorers 10 and 12, spacecraft that made incredible discoveries about our local space environment.  What makes IMP so special is its size and endurance: it will be in space much longer than its predecessors, and its more advanced instruments are capable of more refined measurements. 

It is also hoped that IMP will be for interplanetary space what TIROS is for Earth — a weather satellite providing up to date information on the environment "up there."  Thus, Explorer 18 will not only expand our knowledge of interplanetary physics, it will also be an early warning system, alerting astronauts as to upcoming solar flares and other potentially dangerous events. 

Pretty neat!

Last magazine of the year

Every month, the Journey does its level best to review every science fiction magazine that gets published.  As far as I can tell, we cover all the regular American ones plus the British New Worlds (only Science Fantasy, also British, escapes our coverage).  By tradition, Analog is the covered last, and thus, the December 1963 Analog is the last magazine of the year.  Once this one is reviewed, we can finally get down to the fun business of determining the stats: which mag had the best stories, the most consistent quality, the most women published, and so on.  Call it SFnal baseball.

So how was this last issue?  Read on!

The Nature of the Electric Field, by John W. Campbell

In addition to a nonsensical editorial, Editor Campbell wastes several oversized pages with the reprint of a century-old treatise on electricity.  I guess it's to show how times change, and therefore, we shouldn't be so quick to denounce things like Dianetics, reactionless drives, psionics, dowsing, and other pseudo-sciences.

One star.

Cracking the Code, by Carl A. Larson

Larson's article is on DNA and scientists' attempts to understand how a sequence of amino acids can be the blueprint for all of life's manifestations.  It's a subject that would have been better handled by Asimov…or really, anyone else.  On the other hand, some of Larson's poetical turns of phrase are cute, like analogizing cells to an alien race whose environment is so utterly foreign to our ken, and that's why it's taken so long to decipher their language.

Two stars, I guess.

Dune World (Part 1 of 3), by Frank Herbert

I was mistaken when I called this new serial Herbert's first novel.  He had a serial back in 1956 called Under Pressure that I must have read some seven years ago, but I couldn't tell you what it was about if you put a gun to my head.

Anyway, this new one seems to be generating a lot of buzz, and I can see why.  It features Paul, 15 year-old scion to House of Atreides, whose father, the Duke of Atreides, has been granted the fiefdom of Arrakis.  Arrakis — desert planet — Dune.  This barren wasteland, where water is worth its weight in platinum, offers but one export: Melange, the geriatric spice that affords immortality, cures ailments, and tastes really good, too.  As Arrakis is the only source of melange, control of the planet is a sought plum, indeed.

Except, the Duke knows it is a trap set by the planet's former masters, the Barony of Harkonnen.  In collusion with the Padishar Emperor, Harkonnen has hatched a complicated plan to humiliate and discredit (and probably kill) the Duke, a scheme which whose intricacy might even give Machiaveli pause.

There is a lot to admire in this new work.  It's a fresh universe, highly developed, with a lot of attention to detail and inclusion of many foreign cultural influences.  Women play a prominent role, with the genders being apparently somewhat segregated, each having their own spheres of power.  There are at least two important female characters, something I'm always delighted to find in my science fiction.

One of the aspects of Herbert's world is the conscious disdain for, and even ban on, the use of computers.  Instead, human "mentats" have been bred for the ability of calculation.  This not only creates an interesting new class of person, it neatly relieves the author of predicting the development of electronic brains.

Dune Planet is not, however, an unalloyed success.  In the hands of Cordwainer Smith or even Mack Reynolds, folks who have a deep grounding in other cultures as well as the writing chops to convey them, it would be a masterpiece.  Herbert, on the other hand, is a pretty raw writer.  His stuff can be creaky and dull, the viewpoint shifts from paragraph to paragraph, and his use of ellipses dots is…exuberant (they say we hate most in others what we dislike about ourselves; Herbert writes a bit like I did not long ago before certain editors whipped me into shape).

So, three stars so far, but I'm still reading and look forward to more.

Conversation in Arcady, by Poul Anderson

In George Pal's The Time Machine, Rod Taylor arrives at the far future and discovers humanity living under (seemingly) idyllic circumstances.  They no longer need toil for food, shelter, or clothing.  They do not fight each other nor feel the need to rule.  At first impressed, the time traveler is dismayed to find that the desire to advance, the struggle to improve has been lost.  In perhaps the most effective scene of the movie (at least, it was for me), Taylor finds shelves of books that crumble to dust at the slightest touch.

Poul Anderson's latest is a note for note copy of this scene with the exceptions that 1) Anderson's Eloi are not so simple and childlike, 2) there are no Morlocks fattening up people for supper, and 3) the time traveler can see nothing positive about the situation whatsoever.

I think Anderson is trying to say something poignant, that our race is nothing without the need to better itself.  Or perhaps he's striving for a subtler point — that those who only find meaning in struggle can never find peace, and maybe peace isn't a bad thing.  Or maybe he's saying both things at the same time.

I think he was going for just the first, though.  Three stars.

The Right Time, by Walter Bupp (John Berryman)

John Berryman's series is set in the current world but where psionics are common (but secret).  It's a perfect fit for Analog what with Editor Campbell's peculiar pseudo-scientific beliefs, yet somehow Berryman's stories manage to be good.  This one, about a telekinetic precog with the ability to predict and potentially heal a fellow's heart attack, is my favorite yet.  Four stars.

Thin Edge, by Johnathan Blake MacKenzie

Author Randy Garrett is back under the pseudonym he prefers when he writes about life in the asteroid belt.  This latest piece is about a Belter who is killed by Earthers for the secret of the super strong cording used for rock towing, and about the other Belter who comes to Earth looking for revenge.

It's written with some facility, but the Belters are always too clever and the Earthers too dumb.  A low three or a high two, depending on your mood.

All right!  It's time to tabulate the data for December!

Analog finished in the middle of the pack with 2.8 stars, above F&SF (2.1) and Fantastic (2.2), but below Galaxy (3.2), Amazing (3.2), and New Worlds (3.2), not to mention last month's issue of Gamma, which I didn't get to until this month (3.3).

There were 44 pieces of fiction between the seven magazines, four of which were written by women.  9% is fairly standard these days, sadly.  I'm not sure what's causing the decline, though the numbers were never that much better.

Next up, we'll be covering the UK's newest SF TV show, and beyond that, 1963's Galactic Stars!

Stay tuned.

[The party's still going on at Portal 55.  Come join us for real-time conversation!]

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Magazine, Science / Space Race

[October 20, 1963] Science Experiments (November 1963 F&SF and a space update)

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by Gideon Marcus

Good morning, everyone, and welcome to a special, extra-large Fifth Anniversary edition of the Galactic Journey. 

Five years ago tomorrow, I created the Journey to detail the day-by-day adventures of a science fiction magazine fan who just happened to also be a space journalist.  In the passage of five circuits around the sun, the scope of this project has expanded tremendously to cover books, movies, tv shows, comics, politics, music, fashion, and more.  The Journey has grown from a solo project to a staff of twenty spanning the globe.  Two years ago, we won the Rod Serling Award, and this year, we were nominated for the Hugo.

Imagine where we'll be in another half-decade!

Nevertheless, as we look back to our humble beginnings, it is appropriate that the topics I have slated for discussion today are ones we have covered sine 1958, namely the space race and The Magazine of Fantasy and Science Fiction.

Ticking back from Midnight

Earlier this month, President Kennedy signed the Senate-ratified Partial Nuclear Test Ban Treaty, outlawing American and Soviet above-ground nuclear tests.  No longer shall we detonate atomic blasts in the sky just to see the pretty glow and tinge our TANG with strontium-90.

It's an exciting first step toward controlling the nuclear genie, but the question now becomes, 'How do we enforce the ban?'  A way had to be developed to tell if the other side had tested a bomb without telling us.

Enter the two 'Vela-Hotel' satellites.  Launched on October 18, 1963, they have detectors sensitive enough to pick up the flash of radiation associated with a nuclear blast.  Moreover, these probes will do scientific duty while they enforce the peace, studying X-rays, gamma-rays, neutrons, and charged particles as they pass through interplanetary space, measuring the bow shock, the sheath, and the tail of Earth's magnetic field.  A series of six launches is planned.

Mapping the Magnetosphere

Though the energetic electrons and protons that swirl around the Earth barely weigh 150 pounds total, they carry the tremendous electric and magnetic charges that encircle our globe, protecting us from the endless solar wind of radiation.  One of the great scientific uses of satellites is the mapping of these magnetic fields to better understand the mechanism of their creation and their interaction with the sun's own fields.

Along with the two Vela-Hotels, a five-pound hitchhiker was launched specifically to measure the intensity of charged particles in the magnetosphere using an omni-directional radiation detector.

This new probe in some ways continues the mission of Explorer 14, which began to die in August of this year.  It's still running, but it has lost the ability to modulate its transmissions, rendering scientific data as an incomprehensible babble.  Nevertheless, the doughty satellite collected 6500 hours of data and mapped enough of Earth's magnetosphere to give it a definitive shape.  We now know that, in addition to the compressed bow shock where our planet's field meets that of the sun, there is a long tail in Earth's shadow in the shape of a pointed arch.  Explorer 14 also determined that Earth's field gradually shifts from the traditional north pole/south pole dumbell shape to a simple radial (round, equally distributed) field with distance from the planet.  Finally, Explorer 14 confirmed the tentative discovery reported by Explorer 6 that the charged particles trapped in Earth's magnetic field make a current of electricity ringing the Earth clockwise around its equator.

Pretty neat stuff!

Experiments in Literary SF

On the ground, the stable of authors in Editor Avram Davidson's pay has embarked on their own series of experiments in the form of the November 1963 F&SF.  Some were more successful than others, but none were failures (inasmuch as any experiment can be a failure…):

A Rose for Ecclesiastes, by Roger Zelazny

The once-proud civilization of Mars is a desiccated shell, a treasure trove of dusty tomes and ancient rites amidst tended by the last vestiges of the race.  What hidden wisdom lies behind the sacred temple walls of the Red Planet?  Polyglot and somewhat precious Mr. Gallinger is dispatched from Earth to find out.  Along the way, he learns the secret the Martian people have been carefully guarding, at profound cost to his soul.

This is a hard piece to judge.  On the one hand, it's very clearly an experiment at literary sf, the kind that Sturgeon and Dick have produced to tremendous effect many times in their careers. I greatly admire people who can write the stuff — I'm currently knee deep in my first attempt, so I understand the difficulty involved.  Zelazny almost pulls it off, but he's just not yet seasoned enough an author for the feat.  The story comes off as too affected to be entirely effective.

Moreover, there really is no excuse these days for Mars to be depicted as Earthlike nor its inhabitants entirely human.  That's not science fiction.  It's laziness. 

Three stars.

Mama, by Philip Winsor

Did you ever read the story where it turns out babies retain the memories of their past life for a while after reincarnation?  Apparently, Winsor has too, or Mama is a stunning case of convergent evolution.  Maybe I'm just remembering this tale from a past life.  Three stars.

Welcome Stranger, by Isaac Asimov

I just nonfiction articles on two axes: 1) How entertaining is it to read, and 2) Did I learn anything?  This particular piece is on Xenon, in particular; noble gasses, more broadly; and molecular bonds, in general.  My ignorance of chemistry is profound, so the fact that Dr. A was able to teach me about all of these topics and leave me with a desire to learn more is remarkable.  Four stars.

Wings of Song, by Lloyd Biggle, Jr.

When the last musical instrument has been lost, and even the wood to repair it is a forgotten memory, will song die as well?  This moving piece by sf-writer/musicologist Biggle is hardly plausible, but as a cautionary tale, it's thoroughly haunting.  Four stars.

Winged Victory, by S. Dorman

The sole woman-penned piece in the book (the "S." stands for "Sonya"), Victory involves a confirmed bachelor and the lady who hen-pecks him into submission.  It's a weird tale whose message is literally that the dating game is for the birds.  Just long enough to make its point; three stars.

Eight O'Clock in the Morning, by Ray Nelson

[So impressed was I by this tale that I read it aloud to my family one night.  The Young Traveler insisted on writing her own review — who am I to argue?]


by Lorelei Marcus

A man named Nada awakes to find the world's been overtaken by aliens that control every aspect of human life. These "Fascinators" lead us, own us, are among us, and so Nada finds it his duty to try and save us. A thrilling story to read, it has you on the edge of your seat questioning his every move. Is this really the savior of humanity, or some crazed serial killer? The story is woven with expert writing that gives the main character a lack of doubt (only we have doubts), and a quick pace. A thoroughly enjoyable and insightful short story, it won't take more than ten minutes of your time to read, and the ending might surprise you.  Five stars.

The Eyes of Phorkos, by L. E. Jones


by Gideon Marcus

Lastly, we have the tragic story of James Carew, an English dilettante who plunges into archaeology to compensate for the unhappiness stemming from his fantastically ugliness.  On a small island in the Aegean, he discovers that at least one of the legends of Perseus was based wholly in fact.  This find makes Carew heir to the powers of one of Greek Mythology's most terrifying monsters, and we all know the effect of power (particularly the absolute kind) on a character.

Written in a quaint style, it begins better than it ends, but it's never unrewarding reading.  Three stars.

As you can see, not only was the content of this issue experimental in nature, but so was the format.  Where F&SF normally has the most stories per issue of the SF digests, tending toward vignettes over longer pieces, the November issue had two full novellas and a handful of shorter stories.  This makeup is closer to that of, say, Analog.

The cover is also something of a departure, marking pulp era illustrator Hannes Bok's return to SF after a long hiatus.

All in all, I'd judge this issue a successful effort, certainly more challenging and rewarding than much of the stuff that comes out these days.  On the other hand, there's virtually no science in these pages, which is somewhat worrisome for a magazine whose title would suggest otherwise.

I'd be interested to know what you think.

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Science / Space Race

[Apr. 29, 1963] When a malfunction isn't (the flight of Saturn I #4 and other space tidbits)

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by Gideon Marcus

Baby's first step… Take Four

Out in Huntsville, Alabama, Von Braun's team is busy making the biggest rockets ever conceived.  The three-stage Saturn V, with five of the biggest engines ever made, will take people to the Moon before the decade is out.  But NASA's is justifiably leery of running before walking.  Moreover, there is use for a yet smaller (but still huge!) rocket for orbital Apollo testing and, also, practice building and launching Saturn rocket components.

Enter the two-stage Saturn I, whose first stage has eight engines, like the Nova, but they are much smaller.  Still, altogether, they produce 1.5 million pounds of thrust — that's six times more than the Atlas that will put Gordo Cooper's Mercury into orbit next month.  The Saturn I's second stage will likely also be the third stage on the Saturn V.

The Saturn I has had the most successful testing program of any rocket that I know of.  It's also one of the most maddeningly slow testing programs (I'm not really complaining — methodical is good, and it's not as if Apollo's ready to fly, anyway). 

The fourth in the series lifted off March 28, and they still aren't fueling the second stage.  They've essentially all been tests of stage #1.  This particular test was interesting because they shut off one of the engines on purpose during the flight to see if the other engines could compensate for the loss.  SA-4 continued to work perfectly, zooming to an altitude of 129 kilometers.

SA-4 was the last of the first-stage-only tests.  Henceforth, we'll get to see what the full stack can do. 

A breath of very thin fresh air

We tend to ignore most of the atmosphere.  After all, the air we breathe and most of the weather are confined to the first few kilometers above the Earth.  But the upper regions of the atmosphere contain the ozone layer, which shields us from deadly radiations; the ionosphere, which bounces radio waves back to Earth; beautiful and mysterious noctilucent clouds, only visible after sunset; and of course, spacecraft have to travel through it on their way up and down.  Knowing the makeup of our atmosphere gives us clues to understand climate, the history of the Earth, the interaction of our planet and the sun, and much more.

And yet, aside from the TIROS weather satellites, which only study the lowest level of the atmosphere, there has never been a dedicated atmospheric study satellite.  Sure, we've launched probes to detect radiation and charged particles and the Earth's magnetosphere.  Some have investigated the propagation of radio waves through the ionosphere.  But none have gone into space just to sample the thin air of the upper atmosphere and find out what's up there and how much.

Until now. 

Explorer 17 is a big, sputnik-looking ball loaded with a bunch of pressure gauges and other instruments.  Its sole purpose is to measure the the pressure and make-up of the upper atmosphere, from about 170 kilometers up. 

Launched on April 3rd, in its first few days of operation, the probe has more than tripled all previous measurements of neutral gases in Earth's upper atmosphere to date.  For instance, the satellite has discovered that the earth is surrounded by a belt of neutral helium at an altitude of from 250 to 1000 miles, a belt no one was sure it existed.  We suspected it, of course — helium, produced in the Earth's crust by the natural radioactive decay of heavy elements, is very light.  Just as helium balloons go up and up, free helium's normal fate is to eventually escape Earth's gravitational influence, leaving behind the heavier gasses. 

This is the first time this hypothesis had a chance to be proven, and by measuring the density of this helium, we should be able to get an idea of how much helium is generated by the Earth each year.  This, in turn, will tell us something about how much radioactive material is left on Earth.  Isn't that neat?  We send a probe far up into space to learn more about what's going on down here.  Your tax dollar hard at work.

The Cosmos opening up for Kosmos

Pop quiz — what did the Soviets accomplish last year in the Space Race?  Right.  The Soviets made big news with the flashy dual mission of Vostoks 3 and 4.  Anything else?  Can you recall a single space accomplishment for the Communists?  In 1962, the United States launched Telstar, the Orbiting Solar Observatory (OSO), three Explorer science probes, three Ranger moon probes, Mariner 2 to Venus, and a couple dozen military satellites, not to mention the orbital Mercury flights of John Glenn, Scott Carpenter, and Wally Schirra.

This year is a different story.  We Americans haven't slackened our pace, but the Russians have finally picked up theirs.  They've got a probe on its way to Mars, as well as a new series of satellites called Kosmos.  This month, they launched three, getting up to Kosmos 16.  They are touted as science satellites, but there has been precious little data from them made public or that's worked its way into scientific papers.  This suggests that the Kosmos program is really a civilian front for a military program.  That's the fundamental difference between the Western and Eastern space efforts.  While the American military takes up its share of the national space budget, we still make sure there's room for pure science.  The Soviets have chosen between guns and science in favor of the former (though, to be fair, if we could only afford one option, would we have made the same choice?)

So why did it take so long for the Soviets to get into the groove after having such a seemingly commanding lead in the Space Race?  And just what are the Kosmos satellites really doing up there? 

According to a NASA scientist, the lack of announced flights doesn't mean the Russians didn't try.  Our Communist friends are notorious for talking only about their successes.  In fact, the Soviets were trying a new four-stage version of the booster that launched Sputnik and Vostok, and the fourth stage kept failing.  There might have been a few failed moon missions in there, too, that we never heard about.  We probably only learned about Luna 4, launched April 2, because it took off just fine — it just missed its target (the Soviet reporting after lunar flyby was notably subdued). 

As for what Kosmos is, Aviation Weekly and Space Report suggests the series is really two types of satellites based on weight and orbital trajectory.  One is a small class of probe that stays up for months.  They could be akin to our Explorers, but again, they don't produce science (whereas ours have revolutionized our knowledge of near-Earth space).  More likely, they are engineering satellites designed to test various components for future missions: communications, cameras, navigation.

The other class is big — as big as the manned Vostoks.  They only fly a few days, too, and their orbits cover most of the globe.  These could be unmanned tests of the next generation of Soviet manned spacecraft.  But they also could be repurposed Vostoks designed to conduct spy missions.  Perhaps the Soviet Union is sending up cosmonauts with camera in hand (as we have done on the Mercury missions).  Sure, it's more expensive than our Discoverer spy sats, but everything's free in a command economy, right?

In any event, the world once again has two active space superpowers.  What happens next is anyone's guess…




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Fashion, music, politics, sports, Science / Space Race

[October 31, 1962] Trick and Treat! (A Halloween candy wrap-up of the Space Race)

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[if you’re new to the Journey, read this to see what we’re all about!]


by Gideon Marcus

Halloween is normally a time for scares — for us to invoke, dress up as, and tell stories of various ghosts, ghoulies, and goblins.  But let's face it.  We've had quite enough fright for one month, what with the Free and the Communist worlds just seconds from Midnight over the Soviet placement of nuclear missiles in Cuba.  Thankfully, that crisis has been resolved peacefully, with the Russians agreeing to dismantle their weapons and return them home (who knows what unreported concessions we may have made to assure that outcome).  Nevertheless, with our heart rates still elevated, I think the best remedy is to skip terror this time around and focus on the things that make us smile:

Candy and space missions!

Niña and Pinta sail the magnetic oceans

Last year, I gushed rhapsodically about the voyage of Explorer 12, a vessel designed to map the contours of the Earth's magnetic field.  The results did not disappoint; thanks to that little probe's journey, we now know that there is a sharp boundary between the our planet's magnetosphere and the magnetic emanations of our sun.  This, then, is the map of our unseen ocean, as of this year:

But how constant is this border, this magnetopause, between ours and the solar magnetic sea?  What are the mechanisms of its flow?  Moreover, what of the three charged "Van Allen" belts girdling the Earth?  And what impacts do our atmospheric atomic tests have on them, short and long-term?

That's the nature of science.  Early experiments tend to provide more questions than answers!  Explorer 12, which ceased operations in late '61, won't be answering any more of them; however, NASA launched two more Explorers just this month to pick up where the magnetic Santa Maria left off.

Explorer 14 was launched October 2.  Like Explorer 12, it has a highly eccentric orbit in which the 89 pound spacecraft zooms 60,000 miles into the sky before flying near the Earth.  This takes the probe through all of the layers of the Earth's magnetic field.  The experiment load is largely the same as Explorer 12's, with a couple of additional sensors. 

Explorer 15 is a different kind of ship.  It only goes up to about 10,000 miles, and its mission is more focused on the artificial particle fields created as the result of nuclear explosions.  Unfortunately, when the spacecraft launched on October 27, it did not extend its "arms" — little weight-bearing spars — to slow down the spin imparted to it by its rocket.  Like an ice skater with her arms tucked in, Explorer 15 is spinning much faster than intended.  Nevertheless, good data is being gotten from five of its seven experiments.

Watch this space for exciting updates.  Between the new Explorer twins and the Venus probe, Mariner 2, now several million miles from Earth, the age of space magnetic exploration is truly underway!

Chocolate Arms Race

Since early this century, two superpowers have faced off, each developing a physical and sociological arsenal designed to sway the world into one's camp or the other's.  I am not speaking of the mortal struggle between Communism and Democracy…but that of Pennsylvania's Hershey Company versus Minnesota's Mars, Incorporated.

On the one side, we have the eponymous Hershey Bar, the conical Hershey's Kisses, the peanut-infused Mr. Goodbar, the rice-included Krackel, etc.  On the other, the Milky Way bar, the Three Musketeers Bar, and most importantly (at least to this column's editor) the peanutty Snickers Bar.

Of course, this oversimplifies things.  There are plenty of "Third World" candy makers, including Nestle's (Crunch), Necco (Clark Bar), and Peter Paul (Mounds and Almond Joy).  In fact, my favorite chocolate-based candy is Reese's Peanut Butter Cups, made by Harry Burnett Reese Candy Co.  Harry died six years ago, but I think we can trust his six sons to carry on the independent tradition that has made these confections so delicious. 

In fact, I wholeheartedly support greater parity among the world's chocolatiers.  After all, we've just seen what crises can result in a bipolar world…

Canada joins the Space Race!

Typically, a Thor Agena B launch from Southern California means yet another Air Force "Discoverer" spy sat has gone up; such flights are now weekly occurrences.  But the flight that went up September 29 actually carried a civilian payload into polar orbit: Alouette 1, the first Canadian satellite. 

Alouette is designed to study the ionosphere, that charged layer of the atmosphere hundreds of miles up.  But unlike the sounding rockets routinely sent into the zone, Alouette will survey (or "sound") the ionosphere from above.  Canada is particularly interested in understanding how and when the sun disrupts the region, interrupting radio communications.  Our neighbor to the north is a big country, after all, and it is the Northern Hemisphere's first line of defense against Soviet missiles and bombers.  Radio is, therefore, vital to both defense and civilian interests.

According to early data, it looks like the highest "F2" layer of the ionosphere is as reflective to radio waves from the top as the bottom.  Alouette has also, by beaming multiple frequencies down to Earth, helped scientists determine what radio wavelengths aren't blocked by the ionosphere. 

Sometime next year, Alouette will be joined by an United States "sounder" mission with a different experiment load.  Then we'll have two sets of space-based data to corroborate with ground-based measurements.  Soon, one of the more mysterious layers of the atmosphere, one completely unknown to us a century ago, will be well understood.

Sweetly Sour

Some people love chocolate.  Strike that — most people love chocolate.  But I tend to favor fruit-flavored candies.  For instance, Smarties, Pixy Stix, the recent Starbust Fruit Chews, and brand new for this year: Lemonheads!

Made by Ferrara, the same folks who make Red Hots (which I also love), Lemonheads are a delicious hard candy mix of sour on the outside, sweet on the inside.  I have now made myself sick at least twice on these things, and I firmly intend to do so at least twice more.  I'm an adult, and no one can stop me.  Besides — it keeps me away from Candy Corn…

The Moon claims another Victim

Speaking of sour…first it was the three Air Force Pioneer missions launched in 1958 – none of them made it even halfway to the Moon.  Then the four Atlas Able Pioneer missions of 1959-60 didn't even got into Earth orbit.  Now five out of five Ranger probes launched over the last year have failed. 

Launched October 17, the fifth of the Rangers went on the fritz just a few hours after take-off.  On the way to the Moon, the solar power transformer went kaput, leaving the spacecraft on battery power, which rapidly depleted.  Two days later, the silent ship sailed 9,000 miles over the surface of the Moon, after which ground-based 'scopes quickly lost sight of it. 

Ranger 5 marked the last of the "Block II" line.  The two Block I spacecraft were supposed to stay in Earth orbit and do sky science, but neither of them lasted long enough.  None of the three Block IIs succeeded in their mission of smacking the Moon with their bulbous noses, filled with sensor equipment.  I suspect NASA is going to do a lot of work making sure the Block III craft, armed with cameras, reach their destination alive and snapping photos.  That is, if Congress doesn't cut their funding.

Happy Halloween, and don't let the news get you down. 




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Science / Space Race

[February 1, 1962] Silver Lining (January Space Race round-up!)

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by Gideon Marcus

January has been a frustrating month in the Space Race.  We are no closer to matching the Soviets in the manned competition, much less beating them, and our unmanned shots have been a disappointment, too.  That said, it's not all bad news in January's round-up: stick to it through the end, and you'll see cause for cheer!

Quintuplets fail to deliver

The Air Force has been playing around with combined launches for a while now.  After all, if you're going to spend millions of dollars to throw a booster away, you might as well get multiple bangs for your buck.  Sadly, the latest attempt, a Thor Ablestar launch on January 24 dubbed "Composite 1," failed when the top stage tumbled in orbit and failed to separate from its payloads.

What we lost: SolRad 4, for measuring solar X-rays (only visible above the curtain of the atmosphere); Lofti 2, which would have examined the effects of Earth's ionosphere on Very Low Frequency radio transmissions; Surcal, a strictly military probe designed to calibrate the navy's communications net in orbit; the wholly civilian Injun 2, which would help map the Van Allen belts (see below); and Secor, a big balloon that would have helped the Army with their ranging equipment.

Copies of these probes will end up at some point, either launched together on a big rocket or separately on little ones.

Moon Miss-ion

It's been a bad run of luck for NASA's latest moon program, Project Ranger.  After the failure of the first two Ranger missions, designed to test the probe's engineering and return sky science, there were high hopes for the lunar flight, launched January 26. 

Things went badly from the beginning.  Ranger 3 was pushed into a bad trajectory by a faulty guidance system.  Not only did it rush past the moon, failing both to hit the target or end up in orbit, but it was pointed the wrong way the entire length of the journey.  No useful data or pictures were obtained.  That nifty seismometer that makes up Ranger's Rudolph nose went completely unused. 

Ranger 4, a carbon copy of #3, should launch in the next few months.  Hopefully, they'll have the kinks worked out by then.  This is one of those clear places where the Communists are ahead in the space race, having pioneered both lunar orbit and the moon's surface several years ago.

A rain check for Mercury

The third time turned out also not to be the charm for Major John Glenn.  His orbital Mercury mission has now been postponed three times.  It's a good thing the Marine is so good-natured; I know I'd be frustrated.

The first delay happened on January 22 when there was a failure in the spacecraft's oxygen system.  Definitely something I'd like working on a five hour flight!  On the 27th, cloud cover prevented the launch, and just today, there was a problem with the temperamental Atlas booster.  The next opportunity to launch won't come until February 13.

So much is riding on this flight.  The Soviets have already launched two of theirs into orbit while we flutter futilely on the ground.  Newspapers and talking heads are already opining that we'll have a Red-staffed space station and a Red-dominated moon before long if we don't hurry to catch up. 

Explorer 12: Reaping the harvest

Here's the good news: I've said before that the most exciting thing about a satellite is not its fiery launch but the heap of data it returns.  That's where the taxpayer gets one's money's worth and where the scientist sees the payoff.  Explorer 12 was the latest in the series of probes (starting with America's first, Explorer 1) sent into orbit to probe the hellish fields of charged particles that circle the Earth.  The spacecraft is still up there, though it went silent in December.  However, in its four months of life, it learned a great deal about the furthest reaches of our planet's influence.

For one, Explorer 12 found that the outer of the two "Van Allen" belts around our planet is made mostly of protons rather than electrons (though there are still plenty of the latter — enough to make hanging around a dangerous proposition for astronauts).  Those protons, particularly the less energetic ones, have been linked to solar magnetic storms, which result in spectacular auroras on Earth.

Perhaps even more interesting is that the probe found the edge of the Earth's magnetosphere.  "What's that?" you ask.  Well, our planet is a giant magnet, probably the result of a dense iron core that spins deep inside the Earth.  These magnetic lines of force extend far beyond the Earth's crust and 70,000 kilometers into space where they trap the wind of high energy particles from our sun.  This keeps them from scouring away our atmosphere. 

Where our magnetic field meets the field carried on the solar wind, called the magnetopause, there is an area of turbulence and disorganized magnetism. It is now believed that the sun's wind smashes against the Earth's field, creating a bow shock – the kind you'd see when a blunt body is smacked by a supersonic gas.  Moreover, the Outer Van Belt "breathes" inward and outward, responding to waves in the solar wind.

And speaking of magnetic fields, NASA scientists just released findings from the intentionally short-lived Explorer 10 found a magnetic "shadow" behind the Earth.  Specifically, the solar wind seems to hit our planet's magnetosphere and deflect around the Earth, but the magnetic field acts as kind of an umbrella, shielding a large portion of near-Earth space. 

The general contours of Earth's magnetic environment have thus been mapped.  Neat stuff, eh?

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Science / Space Race

[August 31, 1961] Look on the bright side (August space round-up)

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by Gideon Marcus

Did you ever eagerly wait for Christmas only to be disappointed by what you found under the tree (or, for my fellow Jews, under the menorah)?  That's what this month must feel like for fans of the American space program.  While the Soviets achieved a huge success in August with the multiple orbiting of Gherman Titov, the National Aeronautics and Space Administration had a lousy 31 days.

For one thing, our lunar efforts seem to be cursed.  Ranger 1, launched on August 22, was the first of the third generation of Moon probes.  The flight was a test mission, designed to range high above the Earth but not reach the Moon.  Like the earlier Pioneer missions, Ranger 1 was far from a success.  The second stage of its rocket, the much ballyhooed Agena, hiccoughed.  Instead of going into a high orbit where it could do all sorts of interesting sky science, the satellite ended up in a low orbit that grazed the top of the Earth's atmosphere.

Not only was the poor probe doomed to a short life as the relatively thick air dragged Ranger 1 down with each circling of the Earth, it couldn't get enough power, either.  Ranger was designed to bask for hours at a time in the Sun in the slow, high part of its planned orbit.  Instead, the hapless vehicle plunged into shadow every 45 minutes causing it to vent great gouts of nitrogen gas to orient itself toward the sunrise which came three quarters of an hour later.  Ranger quickly ran out of gas, its panels fell out of alignment to receive energy, and soon after, the ship's batteries gave up the ghost.  When Ranger reentered yesterday, it had been silent for three days.

No science was gathered from the probe.  About the only thing that can be said for Ranger 1 is that its systems worked properly despite the extremely adverse conditions.  Let's hope Ranger 2, scheduled for October, breaks the bad luck streak.

Meanwhile, Explorer 13, a craft of the S-55 class designed to measure all the dust and rocks whizzing about in orbit, went up on August 24.  Like Ranger, its orbit was lower than planned, and it fell blazing to Earth just four days later.  Not that the lifespan of the "beer can" satellite meant much – not a single impact was recorded on any of the probe's wide array of sensors.  Again, the NASA boys found a silver lining: now they know to equip the next S-55 with more sensitive detectors!

Even the Air Force has been having a rough time of it.  Their 28th Discoverer spy satellite failed to orbit on August 4.  Discoverer 29 went up yesterday; we'll see if the flyboys are able to recover their film capsule or not in a few days.

So, was there any good news this month?  Actually, yes!  Remember Explorer 12, which launched two weeks ago?  It has already returned so much data that scientists are overwhelmed.  Explorer will keep broadcasting, but ground stations are only going to listen periodically.  The data already suggests that there is a sharp decline in Earth's magnetic field 50,000 miles up in the direction of the Sun, as if the two celestial bodies are fighting each other to a standstill out in space.  Explorer 12 will stay up for a year, and the scientific harvest is bound to be a bumper crop. 

In fact, it's important to remember that there are still a bevy of probes still beep-beeping away, carrying out scientific missions: Tiros 3, Explorer 9, Explorer 11, Echo 1, even the venerable Vanguard 1.  We did lose one of the family recently, however.  Explorer 7 went off the air on August 24 after nearly two years in space. 

But that's nearly 100 in satellite years, right?

Next up…  the Galaxy!

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Science / Space Race

[August 17, 1961] Voyages of Discovery (Explorer 12)

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Every so often, a discovery comes along that shatters our conception of the universe.  Galileo turned his telescope to the heavens and discovered moons around Jupiter – suddenly, it was clear that Earth was not the center of everything.  Roentgen and Curie showed that matter was not entirely stable, leading to our modern understanding of physics (and the challenges that come with the harnessing of atomic energy).  Columbus sailed to find Asia; instead, he was the first to put the Americas on European maps.

Until 1958, space was believed to be a sterile place, a black void in which the planets and stars whirled.  Maybe there was an odd meteoroid or two, and far away, one might find a big cloud of gas, but otherwise space was synonymous with vacuum. 

Then Explorer 1, America's first space mission, went into orbit around the Earth.  Its particle detectors, designed to measure the free-floating electrons and cosmic rays whizzing around up there, quickly became saturated.  Girdling the planet were hellish streams of energy, particles ionized by the sun and trapped by the Earth's magnetic field. 

Overnight, our idea of space was revolutionized; a few scientists had speculated as to the existence of the "Van Allen Belts," but the idea was hardly mainstream.  More probes were sent up to determine the nature of these belts.  Pioneer 5 went beyond far into interplanetary space and sent back news of a solar atmosphere that extended far beyond the shiny yellow bits – a field of particles and rays that went beyond even Earth's orbit.  Other probes returned maps of the turbulent region where the sun's field met Earth's. 

Space was hardly empty – it was a new ocean filled with waves, eddies, and unknowns to be explored.

Yesterday, Explorer 12 zoomed into orbit, NASA's latest voyager to ply the charged sea of space.  While it practically grazes the Earth at its closest point in its orbit, at its furthest, Explorer 12 zooms out a full 50,000 miles – a fifth of the way to the Moon.  Twice every 31 hours, the satellite studies the Van Allen Belts as well as the region of cislunar space, that variable region in which the Earth and the Sun fight for magnetic dominance. 

Armed with a battery of instruments like that carried by its spiritual predecessor, Explorer 6, the new probe also has several strips of solar cells covered with varying levels of shielding.  These will help determine the extent to which the Van Allen Belts will affect ship's equipment as they travel through the deadly particles.  The data will be of particular use to Apollo astronauts on their way to the Moon.

If Explorer 1 was the satellite Columbus of the Van Allen Belts, and Explorer 6 was John Cabot, then Explorer 12 will be Amerigo Vespucci, fully determining the contours of a new ocean whose depths had been but briefly surveyed before. 

Shiver me timbers, laddie.  It's an exciting time to be a sailor!

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