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)
Sunday, August 16, 2015
Crab Canon
Today's Astronomy Picture of the Day brings Messier 1, the Crab Nebula, into full glory courtesy of this Hubble Space Telescope image.
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