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, November 22, 2015
The Moon of Doom
Today's Astronomy Picture of the Day shows Phobos, the doomed moon of Mars. Tidal forces are working their way on Phobos, so look quick! It won't always be there!