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Supernova - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Supernova
shared by Justin L on 29 Sep 10 - Cached
  • A supernova (plural supernovae)
  • The core collapses in on itself with velocities reaching 70,000 km/s (0.23c),[62] resulting in a rapid increase in temperature and density.
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