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, June 7, 2013
Cosmic Flyer
Today's Astronomy Picture of the Day shows NGC 5302, better known (for obvious reasons) as The Butterfly Nebula.
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