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)
Saturday, June 8, 2019
Mars Beach
Today's Astronomy Picture of the Day brings us bioluminescence in the ocean, the arch of the Milky Way and Mars all viewed be a beach-going dog walker.
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