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, December 3, 2018
Death Spirals
Today's Astronomy Picture of the Day is a short video from a computer model showing the interaction of a pair of black holes. Stay tuned for a related posting tomorrow@
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