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)
Monday, August 13, 2018
Shock!
Today's Astronomy Picture of the Day brings us NGC 2736, in the constellation of Vela. Popularly known as The Pencil Nebula (look at the images in that second link), this nebula is the result of a supernova which occurred some 11,000 years ago.
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