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)
Saturday, March 1, 2014
Beyond the Spiral
Today's Astronomy Picture of the Day shows several spiral galaxies beyond spiral NGC 7331 in the constellation of Pegasus.
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