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)
Thursday, July 27, 2017
Rich Summer
Today's Astronomy Picture of the Day brings us the wonders of the Sagittarius skies pointing to the galactic center. This sort of thing is the best part of northern hemisphere summer skies.
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