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)
Saturday, February 14, 2015
Today's Astronomy Picture of the Day combines a series of photographs taken this day by Voyager 1 as it peeked over its shoulder one last time. Hidden in there is our Pale Blue Dot.