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)
Sunday, November 3, 2019
Shepherd Moon
Today's Astronomy Picture of the Day shows one of Saturn's "shepherd moons", Daphnis. Surfing around the rings of Saturn, you can see the "waves" it makes in those rings.
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