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)
Friday, April 7, 2017
Dipper
Today's Astronomy Picture of the Day brings us the Big Dipper from inside the ruins of a castle. "Mouseover" the image in the link for a guide.
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