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, February 24, 2018
Today's Astronomy Picture of the Day shows spiral galaxy NGC 6946 (the "Fireworks Galaxy"). Face on to us, we can see structures hidden to us in our own galaxy due to dust and gas clouds. A beautiful view!