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)
Wednesday, July 30, 2014
Locals
Today's Astronomy Picture of the Day shows one of our nearest neighbors, on the extra-galactic scale: Messier 31, the Great Galaxy of Andromeda.
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