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, August 10, 2014
Evidence of Two-Dimensional Thinking
Today's Astronomy Picture of the Day shows a Perseid meteor...underneath the International Space Station. Not only is space a place, but it's a three-dimensional place.