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, September 15, 2017
100 Steps
Today's Astronomy Picture of the Day shows the winner of the 2017 The World at Night's International Earth & Sky Photo Contest.
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