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, February 14, 2017
Rose
Today's Astronomy Picture of the Day has always been one of my favorite sights in the sky: The Rosette Nebula, NGC 2237.
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