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)
Tuesday, July 14, 2015
Family Portrait
Today's Astronomy Picture of the Day shows Pluto and Charon as imaged by the New Horizons probe on its closest approach to the system.
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