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, March 2, 2016
Rainbows and Swans
Today's Astronomy Picture of the Day shows lenticular clouds, with rainbow iridescence, over the skies of China.
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