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, July 17, 2015
Rose of Charon
Today's Astronomy Picture of the Day turns to the other major target in New Horizons dance with Pluto: Charon, Pluto's primary satellite.
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