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)
Saturday, April 5, 2014
Farside
Today's Astronomy Picture of the Day shows the farside of the Moon (there is no "dark side", at least no face is permanently dark!).
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