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)
Friday, September 13, 2013
Cutting Edges
Today's Astronomy Picture of the Day is a before-and-after shot of our "twin" Venus going from a conjunction to an occultation to a conjunction with the Moon.
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