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, September 29, 2017
Dust and Gas
Today's Astronomy Picture of the Day shows supernova remnant Puppis A. Imagine if this were spread visibly across our night sky!
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