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)
Tuesday, June 16, 2015
Happy birthday to the Astronomy Picture of the Day! I have not been posting them for 20 years (in the various forms this blog has had), but pretty close!