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)
Sunday, February 15, 2015
The Other Pale Blue Dot
While Earth is generally known as The Pale Blue Dot, our solar system has more than one planet that could bear that nickname. Today's Astronomy Picture of the Day shows you the other one.