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, August 30, 2014
Merlin In His Crystal Cave
Today's Astronomy Picture of the Day shows as starfield as seen from a cave: Hollow Hill Cave in New Zealand and a sprinkling of "stars".
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