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)
Tuesday, April 16, 2013
Between the Strokes of Night
Today's Astronomy Picture of the Day is a view from the ISS (going way back to Expedition Two) of the terminator line on our small blue rock.