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, January 11, 2015
Today's Astronomy Picture of the Day is an artist conception of a planet circling a binary star that undergoes frequent cataclysmic eruptions. Beautiful view, but not a good place of real estate.