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)
Friday, March 9, 2018
Horsehead Closeup
Today's Astronomy Picture of the Day is a Hubble Space Telescope image of the Horsehead Nebula (Barnard 33) in the constellation of Orion.
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