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, March 13, 2017
Closeup: New Worlds
Today's Astronomy Picture of the Day brings us the best view ever of Saturn's tiny moon Pan. The detail comes at a price, we're in the final stages of Cassini's extended mission.