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)
Wednesday, March 5, 2014
Have any artistic ability? How about entering a contest to celebrate NASA's space workhorse, the Centaur (veteran of over 200 missions)?