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"People ask me how I do research for my science fiction. The answer is, I never do any research. I just enjoy reading the stuff, and some of it sticks in my mind and fits into the stories."
- Frederik Pohl
 |
| Lunar Advertisement | ||
| An 'ad' on the lunar surface that can be seen by its audience on Earth. |
It started out as a perfectly innocent experiment, meant to add to the store of human knowledge. Just an extension of an experiment tried on Earth, or rather in the atmosphere high above the surface. Sodium ejected at a high altitude dispersed in a scientifically useful manner.
| "...The
sodium cloud will be completely invisible while it’s rising up through
the darkness of the Moon’s shadow.
Then, quite suddenly, it will flash
into brilliance as it enters the sun’s
rays, which are streaming past over
our heads right now as we stare
up into space. No one is quite sure
how bright it will be, but it’s a
pretty safe guess that you’ll be able
to see it in any telescope bigger
than a two-inch. So it should just
be within the range of a good pair
of binoculars...”
Then a sudden yellow glow began to spread across the sky, like a vast and unwavering aurora that became brighter even as we watched. It was as if an artist was sprawling strokes across the stars with a flame-filled brush. And as I stared at those strokes, I suddenly realized that someone had brought off the greatest advertising coup in history. For the strokes formed letters, and the letters formed two words — the name of a certain soft drink too well-known to need any further publicity from me. How had it been done? The first answer was obvious. Someone had placed a suitable cut stencil in the nozzle of the sodium bomb, so that the stream of escaping vapor had shaped itself to the words. Since there was nothing to distort it, the pattern had kept its shape during its invisible ascent to the stars. I had seen sky-writing on Earth, but this was something on a far larger scale. The next morning, every newspaper on the planet carried that famous photo of the crescent Moon with the luminous slogan painted across its darkened sector. The letters were visible, before they finally dispersed into space, for over an hour. By that time the words were almost a thousand miles long, and were beginning to get blurred. |
| Technovelgy from Watch This Space,
by Arthur C. Clarke. Published by Fantasy and Science Fiction in 1957 Additional resources -
|
Thanks to Winchell Chung for suggesting this item in a comment sixteen years ago!
Compare to atmospheric advertising from In the Year 2889 (1889) by Jules Verne, the Orbiting Casino Advertising Sign from One Against The Legion (1939) by Jack Williamson and the permanent skywriting from Soap Opera (1953) by Alan Nelson.
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'Our planes are going to start bringing in bales of discarded plastics...'
'... completely forgetting the ship at sight of the awesome figure and great head of the giant Gaut...'
'So, Ender, we will now begin your education.'
'What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot!'
'Forget the head atop it, the legs below, feet, arms, hands. It compels erasure.'
'That explains how it was so easy for me to remain motionless in midair or to perch on a flagpole in imitation of a giant bird, even in the windy city of Chicago.'
'The thirty-odd miles of The Factory’s circumference...'
'Wandering mines, you took them out on the edge of the desert, set them down and activated them.'
