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)
Tuesday, October 29, 2013
A Dream Within a Dream
Today's Astronomy Picture of the Day shows the complex nebular structures in the constellation of Orion: Messier 42, the Great Orion Nebula and embedded within, the inky darkness of the Horsehead.