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)
Wednesday, July 26, 2017
Monument Arch
Today's Astronomy Picture of the Day shows the arch of the Milky Way over Monument Valley near the Arizona-Utah border. "Mouseover" the image in the link for a constellation and geology guide.
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