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supernova remnant |
Also found in: Wikipedia, Hutchinson | 0.03 sec. |
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supernova remnant [¦sü·pər′nō·və ′rem·nənt] (astronomy) A nebula consisting of an expanding shell of gas that has been ejected by a supernova. Abbreviated SNR. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Cosmic Ray Font: Supernova remnants rev up ions" (SN: 10/1/05, p. Supernova remnants (SNRs) are the vestiges of supernovae explosions. X-ray images taken a decade ago showed that shock waves from supernova remnants can accelerate electrons to cosmic ray energies, but electrons make up only about 10 percent of cosmic rays. |
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