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)
Tuesday, May 24, 2016
Today's Astronomy Picture of the Day shows the night sky over the plains of Spain. "Mouseover" the image for a guide to the constellations and a few wandering planets.