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 26, 2015
Today's Astronomy Picture of the Day is another image celebrating the anniversary of the Hubble Space Telescope: Mz3, the "Ant Nebula" in the constellation of Norma (yes, Norma!).