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, May 23, 2014
Today's Astronomy Picture of the Day shows an orbital dance. The ESA's Rosetta probe has been wakened successfully and is on track for it's rendezvous with comet 67P/Churyumov-Gerasimenko.