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)
Saturday, March 12, 2016
Spectral Flash
Today's Astronomy Picture of the Day is another unique image from the solar eclipse: a thin sliver of the solar chromosphere and prominences yields a rainbow of emission lines to the side.
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