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)
Friday, February 7, 2014
Voyage to Far Centaurus
The Chandra X-Ray Space Telescope takes a look at Centaurus A. Nine days of observing time have been combined into a new view.