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)
Thursday, April 4, 2013
Today's Astronomy Picture of the Day shows Messier 64, sometimes known as the Sleeping Beauty Galaxy, or, in this case, the Black Eye Galaxy. Can you tell why?