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, August 12, 2013
Vermin of the Skies
Today's Astronomy Picture of the Day brings home (in pretty dramatic fashion) how much known "stuff" is out there passing by our small blue rock.