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)
Monday, January 11, 2016
Diffraction Pattern
Today's Astronomy Picture of the Day shows a ring, a corona, around the Sun. This is not the corona that one can see during an eclipse (real or caused by artificial means), but a result of light passing through moisture in our atmosphere.
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