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)
Tuesday, October 23, 2018
Clumping
Today's Astronomy Picture of the Day shows Hyperion, an example of the early formation of stars into galaxies, of galaxies into clusters, and clusters into super-clusters.
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