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 23, 2018
Cosmic Jellies
Today's Astronomy Picture of the Day shows Sharpless 249 and the named Jellyfish Nebula. What other nautical wonders reside in the sky?
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