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, December 6, 2015
Today's Astronomy Picture of the Day is a tiny representation of a possible future source of energy. The Casimir Effect, dark energy and tiny sticky parts, oh my!