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)
Monday, February 25, 2019
Dancing Sprites
Today's Astronomy Picture of the Day shows the atmospheric phenomenon known as Red Sprites dancing above thunderclouds over Western Australia.
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