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, April 23, 2016
Today's Astronomy Picture of the Day shows a long-term exposure from Jabul Shams in Oman. Rugged landscape, lunar light and Milky Way all in one.