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, September 23, 2014
Moons
Today's Pluto Picture of the Day shows a Hubble Space Telescope image of Pluto and Charon and (at that point) newly-discovered moons Nix and Hydra.
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