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, November 13, 2013
In the Shadow of the Rings
Today's Astronomy Picture of the Day shows Saturn and it's rings. And...if you look closely ("mouseover"), Mars, Venus and the Earth-Moon pair.
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