Assertion: supernova's energy | /r/HasProperty | radiated by the crab nebula
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Source sentences:
text: A simple calculation showed that a rapidly spinning neutron star slowing down by 38 nanoseconds per day releases almost exactly the energy which is being radiated by the Crab Nebula, just the p[lace where Baade & Zwicky would predict that a neutron star might have been formed.