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)
Friday, April 5, 2013
Comet and Galaxy
Today's Astronomy Picture of the Day is a long-term exposure showing both the Andromeda Galaxy and Comet PanSTARRS, journeying away from the Sun.