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, January 10, 2018
Interacting Arp 243
Today's Astronomy Picture of the Day shows NGC 2623, a pair of galaxies undergoing a vast and slow collision. Also known as Arp 243, this object has been studied to see what happens during such a cosmic catastrophe.
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