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Magazine/Anthology, Science / Space Race, Science Fiction/Fantasy

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

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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

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Science / Space Race

[December 6, 1969] Here comes the Sun (and Moon) — Orbiting Solar Observatory, Apollo, ESRO, and Explorer 41!

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[New to the Journey?  Read this for a brief introduction!]

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

With the Apollo missions taking so much of our attention (there were four flights this year), it is understandable that unmanned missions and science have gotten short shrift.  I'm going to try to address this oversight now.

Far out!

Do you remember Pioneer 6 (launched Dec. 16, 1965) and Pioneer 7 (launched Aug. 17, 1966)?  They are deep space probes designed to observe the Sun from widely different vantage points.  In fact, we've been a bit remiss: since '66, two more identical Pioneers have gone up: Pioneer 8 (December 13, 1967) and Pioneer 9 (November 8, 1968).  A fifth and final Pioneer was launched August 27, 1969, but its carrier rocket exploded.  The loss of that one is pretty bad; whereas the others are all spread out fairly equidistantly around the Sun, more or less as far away from it as the Earth, Pioneer "E" was going to be put in an orbit that kept it close to Earth, where it would be used to give as much as a two-week warning of dangerous flare activity.

Nevertheless, NASA is blazing along with four satellites.  Indeed, thanks to the longevity and spread-out positions of Pioneers 6 and 7, they were able to perform an unique experiment.  On Nov. 6, the two satellites were 175 million miles apart on a common line with the Sun, and scientists observed the difference in behavior of solar wind particles due to their passage through space in opposite directions.  In a similar vein, on Dec. 2, when the spacecraft reached points on a common spiral line leading out from the Sun (the star rotates, so it flings out particles in a spiral rather than linear fashion), scientists measured different kinds of solar particles coming from the same events on the Sun.

We'll have to wait for the journals to publish any papers, but this is the kind of large-scale, long-term science made possible by the Pioneer probes!


Another cool example of Pioneer science

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