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 27, 2015
Today's Astronomy Picture of the Day shows Eta Carinae. Where's the star? What's going on? A long slow match leading to an eventual explosion: maybe we'll be lucky to catch the flash.