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, January 4, 2018
Cosmic Crab
Today's Astronomy Picture of the Day brings us another supernova remnant, and the first on the list of not comets that has outlived (vastly) the comets discovered by Charles Messier.
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