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, June 24, 2014
Today's Astronomy Picture of the Day is a wonderful shot of NGC 7023 in the constellation of Cepheus. Popularly known as the Iris Nebula, it is a wonderful study of rich star fields and nebular clouds.