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, December 4, 2017
Lunar Cycle
Today's Astronomy Picture of the Day is a short video taken by the Galileo vehicle on one of its gravity-assist passages past Earth on the way to Jupiter. The video shows the Moon's journey around our Earth.
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