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)
Saturday, December 28, 2013
Into the Stargate
Today's Astronomy Picture of the Day is a time-lapse sequence of auroral activity over Alaska. It puts me in mind of the stargate sequence from 2001: A Space Odyssey.