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, August 14, 2015
They All Fall Down
Today's Astronomy Picture of the Day shows Enchanted Rock State Natural Area in Texas (shame about those city-generated light domes!) with a sprinkling of comet debris.
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