These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
Friday, November 24, 2017
Stopover at Shorty
Today's Astronomy Picture of the Day shows the Apollo 17 crew working at Shorty Crater. Why haven't we been back?
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