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)
Wednesday, August 26, 2015
Asterism
Today's Astronomy Picture of the Day shows Collinder 399, The Coat Hanger. Is it an accidental pattern in the sky or an actual open cluster? ("Mouseover" the image to get a guide to the pattern.)
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