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)
Tuesday, December 25, 2018
Grand Spiral
Today's Astronomy Picture of the Day is an image courtesy of the Hubble Space Telescope, Messier 100, a grand spiral galaxy in the constellation of Coma Berenices.
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