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, August 18, 2015
Potential Sky Show
Today's Astronomy Picture of the Day introduces us to Comet C/2013 (Catalina). Will this become our next great naked-eye comet? Stay tuned!
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