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, September 3, 2013
North America and the Pelican
Today's Astronomy Picture of the Day is a wonderful shot of the North American Nebula and the Pelican Nebula, both found in the constellation of Cygnus. These are both wide-field objects, best seen under dark skies and with a filter (I've only managed it a few times). The North American Nebula was featured on the cover of Analog for Joe Haldeman's Tricentennial.
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