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, October 6, 2014
Today's Pluto Picture of the Day shows a size comparison between Earth and Pluto. Pluto's estimated size has shrunk over the years as observational abilities increased.