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 28, 2014
Holding Up the Sky
Today's Astronomy Picture of the Day shows light pillars in the skies of Latvia. Caused by reflections of light in ice crystals, they appear to be holding up the sky of Sigulda.