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, September 26, 2014
All the Colors of Mars
Today's Astronomy Picture of the Day shows one of the initial images from the MAVEN (Mars Atmosphere and Volatile EvolutioN) orbiter now at Mars.