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 25, 2013
Today's Astronomy Picture of the Day continues the lunar theme with a nice view of the lunar corona (you really never think of that associated with the Moon, do you?) over Cochem, Germany.