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)
Thursday, June 25, 2015
Circles in the Sky
Today's Astronomy Picture of the Day shows time-elapse star trails in the sky above Table Mountain. Amazing how many stars are shown given the lights on the ground.