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, October 19, 2013
Cave of Stars
Today's Astronomy Picture of the Day shows Sh2-155, The Cave Nebula, in the constellation of Cepheus. Beautiful isn't it? I wonder why more people don't look up in the sky?