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 7, 2015
At the Eyepiece
Today's Astronomy Picture of the Day shows the professional astronomer doing something that rarely happens: viewing an object directly through the eyepiece of a large (6.5 meter) telescope.