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)
Sunday, April 22, 2018
Today's Astronomy Picture of the Day captures a Lyrid meteor falling through the summer constellations during a snowy late spring night. "Mouseover" the image in the link for a constellation guide.