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)
Monday, May 8, 2017
Sunny Day on the Beach
Today's Astronomy Picture of the Day shows a sunny (ancient) beach on Mars. MSL Curiosity is on the way to "Mount Sharp"!
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