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)
Friday, April 19, 2013
Today's Astronomy Picture of the Day shows NGC 1788 in the constellation of Orion. Subtle whiskers reach out from the Witch Head Nebula and seem to connect it to NGC 1788, a reflection nebula.