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, March 12, 2017
Heart of the Nebula
Today's Astronomy Picture of the Day brings us one of my favorite sites in the night sky. Christoph Kaltseis brings us the heart of Messier 42, The Great Nebula n Orion.