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)
Sunday, April 19, 2015
Ring Around the Galaxy
Today's Astronomy Picture of the Day shows AM 0644-741, a "ring" galaxy in the constellation of Volans. The image is part of the anniversary events around the launch of the Hubble Space Telescope in 1990.