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, September 21, 2019
Today's Astronomy Picture of the Day shows the Tulip Nebula, found in the constellation of Cygnus (the Swan). The night sky is full of flowers.