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)
Monday, February 19, 2018
Today's Astronomy Picture of the Day is a short video (soundtrack courtesy of Erik Satie!) depicting galaxy formation in the early universe.