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)
Wednesday, November 29, 2017
Great Nebula
Today's Astronomy Picture of the Day brings us my favorite winter observing object, certainly not as I have ever seen it! Messier 42, The Great Nebula of Orion.
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