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, December 31, 2013
Inside the Nebula
Today's Astronomy Picture of the Day shows the Horsehead Nebula inside the constellation of Orion. I've only managed to spot this a few times from my light-soaked skies!