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)
Saturday, September 23, 2017
When Comets "Collide"
Today's Astronomy Picture of the Day brings us multiple comets seemingly on a rendezvous. What a sight for the sky! "Mouseover" the image in the link for a guide.
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