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, March 2, 2015
Take the Lens Cap Off
Today's Astronomy Picture of the Day shows a lenticular cloud nearly blocking a view of the further objects of the Moon, Mars (can you spot it?) and Venus.