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, September 4, 2014
Sliding Spring
Today's Astronomy Picture of the Day shows Comet Siding Spring (C/2013 A1) passing through the rich star fields of the Small Magellanic Cloud, 47 Tucanae and NGC 362. Siding Spring is on it's way to a close encounter with Mars.
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