Romanent de supernova: diferència entre les revisions
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== Enllaços externs ==
{{Commonscat}}
* [http://www.apodcatala.com/0411/apod041105.htm Romanent de supernova] {{Webarchive|url=https://web.archive.org/web/20070928071214/http://www.apodcatala.com/0411/apod041105.htm |date=2007-09-28
* [http://www.xtec.cat/~rmolins1/univers/cat/estel00.htm Romanent de supernova] {{ca}}.
* [http://heasarc.gsfc.nasa.gov/docs/objects/snrs/snrstext.html Plana de la NASA] {{en}}.
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