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)
Saturday, October 5, 2019
Five Moons
Today's Astronomy Picture of the Day shows the waxing Moon and four more. Four? Look carefully and you'll spot Jupiter and four of the Galilean moons.
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