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, April 17, 2013
Through the Eye of the Lens
For today's Astronomy Picture of the Day, we set our sights a bit lower than the galaxies and nebula of the past couple of days: a lenticular cloud hovers near Mount Hood.