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, July 8, 2016
Pulses
Today's Astronomy Picture of the Day shows, in visible light, the chaos swirling around something we first discovered in radio light: the swirling chaos around the pulsar located in the Crab Nebula.
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