Tag Archives: mariner 6

[May 16, 1970) The Tocsin and The Believing Child (June 1970 Fantasy and Science Fiction)

photo of a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

Rime of the Recent Mariner

I always cast about the news for tidbits to head my articles.  After all, when people read my writings, say, a half-century hence, I want them to be appreciated in the context in which they were created.  Creations, and critique of those creations, cannot stand in isolation (or so I believe).

But, wow, how many times can I talk about the latest protest/riot (six killed in Atlanta last week), or Cambodia (Admiral Moorer recently assured us that the reason we can't destroy the mobile NVA base is…because it's mobile; but we did liberate 387 tons of ammunition, 125 tons of prophylactics, and 83 tons of Communist finger puppets so the Search & Destroy mission was absolutely a success), or the Warm War going on in the Middle East (2 Egyptian Mig-21s shot down the other day, 2 Syrian Mig-17s the day before, but the Israelis absolutely did not lose an F-4 over Lebanon) before it all sounds the same?  Even Governor Reagan's latest escapades into cost effectiveness and court stacking are old hat.

Photograph of a middle-aged white man in a military uniform.
This iteration of Bull Wright instills less confidence than Dan Rowan's…

To heck with it.  Today, I'm going to stick with news in my bailiwick, and nifty news to boot.

You folks surely remember Mariners 6 and 7, twin probes sent past Mars last year, returning unprecedented information and photos from The Red Planet.  Well, even now, both probes are contributing to science, long past their original mission.

JPL astronomer Dr. John D. Anderson and Cal Tech astronomer Dr. Duane O. Muhleman are using the two spacecraft to test the validity of Einstein's theory of relativity.  Per Einstein, the velocity of light slows in the presence of a gravitational field.  If that's the case, then the signals from the Mariners, as they pass the Sun, should decrease—slightly, but measurably. 

To measure this, the two scientists had to wait until Mariner 6 and Mariner 7 passed behind the Sun with respect to the Earth.  For the former, this happened on April 30; for the latter, May 10.  The precise distance-measuring system the two scientisits built in the Mohave Desert should register a slow-up of 200 millionths of a second in the spacecrafts' round trip signal.

This confirmation, should it be reported, will help put paid efforts by other scientists who say that Einstein's theories are wrong or inaccurate, by as much as 7% according to Princeton's Dr. Robert H. Dicke, who needs that to be the case for his theory of Mercury's curious orbital eccentricities.

Black-and-white photograph of a house-sized parabolic antenna. Text below the image says: The Mars Station of the Deep Space Network, with two-hundred-and-ten-foot reflector, high-power transmitter, and quick-change tri-cone feed, tracks Mariner six and Mariner seven through superior conjunction, beyond the Sun, at ranges up to two hundred and forty million miles.

In other Mariner news, New Mexico State Univ. astronomer and Mariner project scientist Bradford A. Smith has some neato news about Phobos, the larger of Mars' moons.  Mariner 7 snapped a picture of the little rock at a distance of 86,000 miles.  JPL photo-enhancement techniques indicated that Phobos was nonspherical and was larger and had a darker surface than previously thought.  It's just 11.2 by 13.7 miles in dimension, elongated along the orbital plane.  Its average visual geometric albedo is just 0.065, lower than that known for any other body in the solar system.

With its weird shape and composition, all signs point to Phobos not being a sister or daughter of its parent planet, but rather, probably a captured asteroid.

Very blurry black-and-white photograph of the Martian moon Phobos, visible only as a tiny smudge of irregular shape against a gray background.

The issue at hand

In a happy, elevated mood, now let us turn to the latest issue of Fantasy and Science Fiction—after all, it doesn't do to review stories on an empty soul.

Cover of The Magazine of Fantasy and Science Fiction for June 1970, announcing stories by Isaac Asimov, Ron Goulart, D. F. Jones, Harry Harrison, and Zenna Henderson. The illustration shows a man in a diving suit near a rift in the ocean floor.
cover by Jack Gaughan illustrating

Continue reading [May 16, 1970) The Tocsin and The Believing Child (June 1970 Fantasy and Science Fiction)

[March 20, 1970] Here comes the sun (April 1970 Fantasy and Science Fiction)

photo of a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

Out, damn spot!

A couple of weeks ago, Victoria Silverwolf offered us a tidbit on the latest solar eclipse.  I've since read a bit more about the scientific side of things and thought I'd share what I've learned with you.

It was the first total solar eclipse to be seen over heavily populated areas of U.S. since 1925, greeted by millions of viewers who crowded the beaches, towns, and islands where viewing was most favorable.  The eclipse cut a nearly 100 mile wide swath through Mexico, Florida, Georgia, the Carolinas, Virginia, and Nantucket Island, Mass.  It was 96% total in New York City and 95% in the nation's capital.

A black and white collage of several photographs of a partial solar eclipse over a college building. Below the image, the headline reads Partial Eclipse as seen in North County.  The caption reads The partial eclipse seen by teh North County Saturday morning is superimposed over the Palomar College Dome Gym in this collage by staff photographer Dan Rios.  The maximum ecliplse in this area was roughly 30 per cent at 9am as shown in the fourth sun from the left.  Seven states were treated to a full eclipse.
a clipping from Escondido's Times-Advocate

But ground viewing was only the beginning.  NASA employed a flotilla of platforms to observe the eclipse from an unprecedented variety of vantages.  A barrage of sounding rockets (suborbital science probes) were launched during the eclipse to take measurements of the Earth's atmosphere and ionosphere.

In space, radio signals from Mars probe Mariner 6, currently on the far side of Sun, were measured to determine how the eclipse affected communications and to study changes in charged particles in earth’s atmosphere.

Two Orbiting Solar Observatories, #5 and #6, pointed their instruments at the Sun to gather data on the solar atmosphere, while Advanced Test Satellite #3 took pictures of the Moon's shadow on the Earth from more than 20,000 miles above the surface.  Three American-Canadian satellites, Alouette 1, Alouette 2, and Isis 1, all examined the change the eclipse caused in the Earth's ionosphere.

Earthside telescopes got into the mix, too: Observers from three universities and four NASA centers at sites in Virginia and Mexico not only got great shots of the solar corona, but also of faint comets normally washed out in the glare of the Sun.

I can't imagine anyone in 1925 but maybe Hugo Gernsback could have foreseen how much attention, and from how many angles such attention would be applied, during the 1970 eclipse.  It's just one more example of how science fiction has become science.

Waiting for the dawn

The last two months of The Magazine of Fantasy and Science Fiction weren't too hot.  Does the latest issue mark a return of the light or continued darkness?  Let's find out…

The cover of The Magazine of Fantasy and Science Fiction April edition. At the center of the dark cover, a bright swirl suggesting a star or sun is surrounded by darker wisps emanating in spirals from it.  Below it is an alien landscape with craggy mountains in teh distance and black-streaked hills in the foreground, in muted shades of blue and brown.
cover by Chesley Bonestell

Continue reading [March 20, 1970] Here comes the sun (April 1970 Fantasy and Science Fiction)

[August 8, 1969] Two by Four (Mariners 6 and 7 go to Mars)

photo of a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

Into the Wild Black Yonder

Ten years ago, when we started our planetary series of articles, none of other worlds in our solar system had been explored.  Since then, five intrepid spacecraft have toured two planets.  Mariner 2 and Mariner 5 probed Venus, returning the revelation that the shrouded world is a seething cauldron.  Mariner 4 returned the first pictures of the Red Planet, shocking humanity with images of Moonlike craters and reports of a vanishingly thin atmosphere, dashing forever the vivid, science fictional conception of Mars as an inhabitable world.

Now, twin Mariners 6 and 7 have flown by Mars, dramatically increasing what we know about the fourth planet.  While we'll never get back that fantasy so elegantly woven by Edgar Rice Burroughs and Leigh Brackett, the new Mars is also not a blasted husk either.


Distant views of Mars, as seen by Mariner 7 as it approached the planet

Continue reading [August 8, 1969] Two by Four (Mariners 6 and 7 go to Mars)