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)
Thursday, May 12, 2016
Fuller View
Today's Astronomy Picture of the Day is another view of the recent transit of Mercury, giving us a much larger view of the Sun and how small Mercury appears.
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