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)
Tuesday, February 26, 2013
For a Rainy Day
Did you know that it "rains" on the Sun? Yes, not water but it is "rain"! Today's Astronomy Picture of the Day shows "coronal rain". What mad universe!