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)
Wednesday, January 15, 2014
A Different Orion
Today's Astronomy Picture of the Day shows a familiar part of the sky in an unfamiliar light: The Spitzer Space Telescope looks at Messier 42, The Great Nebula of Orion, in infrared light.