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)
Wednesday, January 27, 2016
Arches and Reflections
Today's Astronomy Picture of the Day shows the Arch of the Sky (the Milky Way), auroral activity and the reflections of both in a lake. "Mouseover" the image for a constellation guide.