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)
Friday, April 3, 2015
Double Double
Today's Astronomy Picture of the Day is of a rare sight: same place, opposite times of day: a ice halo surrounded the Sun (day shot) and Moon (night shot).
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