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, January 16, 2016
Clustering
Today's Astronomy Picture of the Day shows a cluster of galaxies centered on Messier 106, a spiral galaxy in the constellation of Canes Venatici.
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