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, February 11, 2015
Spiralgraph
Today's Astronomy Picture of the Day shows the rich detail and complex structure visible in Messier 100 (in the constellation of Virgo), a grand spiral galaxy.
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