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, July 13, 2014
Inside the Eye
Today's Astronomy Picture of the Day takes us inside NGC 2818, a planetary nebula in the constellation of Pyxis.
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