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)
Tuesday, June 25, 2019
Degrees of Magnitude
Today's Astronomy Picture of the Day shows the twenty-five brightest (visible to the naked eye) stars of the sky in their true colors.
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