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)
Thursday, June 4, 2015
Today's Astronomy Picture of the Day is a nice perspective on perspective. Three of the objects in this field of view are (relatively) close. One is far away: Galactic wanderer NGC 2419, a globular cluster in the constellation of Lynx.