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, May 19, 2015
Today's Astronomy Picture of the Day is a detailed look into the globular cluster 47 Tuc (NGC 104) in the constellation of the Toucan (yes, the Toucan). Richard Feynman once said of globular clusters:
"He who cannot see gravity at work here has no soul."