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)
Sunday, April 23, 2017
Quantum Dots
Today's Astronomy Picture of the Day is the sort where you need to spend time on the site reading the text. Ponder on.
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