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)
Monday, February 25, 2013
Moon Planet Moons
Today's Astronomy Picture of the Day is a pretty nifty juxtaposition of our Moon, Jupiter, and three of Jupiter's moons! Oh, and a smaller vehicle within our own atmosphere.
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