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)
Thursday, March 8, 2018
Cyclones
Today's Astronomy Picture of the Day brings us one of the latest images from the Juno Orbiter—polar cyclones at Jupiter!
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