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)
Friday, December 1, 2017
Fish and Continent
Today's Astronomy Picture of the Day covers two emission nebula: The North American Nebula (NGC 7000) and The Pelican Nebula (IC 5070). The collected regions of gas and dust cover over 150 light years (6 degrees) of the sky.
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