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)
Tuesday, May 8, 2018
To the Edge
Today's Astronomy Picture of the Day stretches from our solar system to the edges of the observable universe. Quite a lot of landscape!
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