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, October 28, 2015
The Eternal Sky
Nothing ever changes among the "fixed stars"? Today's Astronomy Picture of the Day is a short video which shows otherwise.
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