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)
Sunday, July 1, 2018
Active Moon
Today's Astronomy Picture of the Day shows Saturn's moon Enceladus. The "tiger stripes" show signs of an active geology (iceology?) as ice and organic particles escape from the interior ocean. What lies beneath?
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