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, February 21, 2014
Interstellar Medium
Today's Astronomy Picture of the Day shows The Lighthouse Nebula, a jet of matter spiraling out from the remnant of a supernova for a distance of nearly 37 light-years.
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