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, November 30, 2015
Coreward, Ho!
Today's Astronomy Picture of the Day peeks inside the center of NGC 3521, a spiral galaxy in the constellation of Leo.
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