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)
Monday, February 18, 2013
Today's Astronomy Picture of the Day is a video compilation of several shots of the Great Russian Meteor (is that the official designation now?).