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)
Tuesday, December 12, 2017
The Milky Way's Attic
Today's Astronomy Picture of the Day shows some of the sights you can see on clear nights this winter in the Northern Hemisphere.
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