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 25, 2013
Dark Side of the Moon
Today's Astronomy Picture of the Day is a collage of images showing our Moon in various stages of being eclipsed by the shadow of our own planet.