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)
Wednesday, April 17, 2019
Northern Spiral
Today's Astronomy Picture of the Day shows Messier 81 (NGC 3031 or Bode's Galaxy), a bright spiral galaxy found in the northern hemisphere constellation of Ursa Major. Messier 81 made headlines recently, when an image was produced of the area around the black hole at the center of the galaxy.
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