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, June 28, 2015
Bricks in the Wall
Today's Astronomy Picture of the Day is not a wall of bricks either painted or cast in all the colors of a rainbow. It is our home star, the Sun, broken apart into a spectrum.