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)
Thursday, May 29, 2014
The Alpha of the Omega
Today's Astronomy Picture of the Day shows one of the most spectacular globular clusters that circles our home galaxy: NGC 5139, Omega Centauri.
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