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, May 4, 2019
Morning Wisps
Today's Astronomy Picture of the Day brings us the pre-dawn sky and a waning Moon, also dimly illuminated by Earthshine ("the da Vinci glow").
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