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, May 10, 2018
Take Me to the River
Today's Astronomy Picture of the Day shows a flood of galaxies in the constellation of Eridanus (The River). Two are "interacting" (in other words, one is being absorbed by the other).