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)
Thursday, June 11, 2015
Subtle
Today's Astronomy Picture of the Day spans the width of three full Moons. What detail that can be found in such a small part of the sky!
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