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, March 10, 2018
Lunar Rhythms
Today's Astronomy Picture of the Day brings us a full set of moon phases, with a bonus eclipse thrown in for good measure.
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