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, September 17, 2018
Shock Ring
Today's Astronomy Picture of the Day shows AM 0644-741, a ring galaxy. When galaxies collide, we get pretty pictures!
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