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, April 8, 2019
Sky Painting
Today's Astronomy Picture of the Day brings us the skies of Norway, where auroral activity combines with an experiment released by sounding rockets to paint the sky.
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