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, September 7, 2018
Hex
Today's Astronomy Picture of the Day shows the North Polar Hexagon of Saturn, as taken by the Cassini Orbiter in 2012. And you thought Jupiter's Great Red Spot was a planetary oddity!
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