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, March 31, 2017
Dimensional Snowball
Get out your 3-D glasses! Today's Astronomy Picture of the Day is a red-blue anaglyph of the surface of Comet 67P Churyumov–Gerasimenko.
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