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Astronomers Have Been Watching a Supernova s Debris Cloud Expand for Decades with Hubble

Thanks to the Hubble's longevity, astronomers have observed this expanding supernova remnant for two decades.

United statesJohns hopkins universityRavi sankritWilliam blairSpace telescope science instituteHubble space telescopeCygnus loopVeil nebulaCygnus loop nebulaSpace telescope scienceAstrophysical journalNonradiative shockCygnus loop supernova remnantJohns hopkins

25 beautiful nebulas that showcase the wonder of the universe

Nebulas — colorful clouds of expanding gas and dust — have long captivated stargazers with their beauty. Here are 25 of the most stunning nebulas in the universe.

South dakotaUnited statesHermann minkowskiCarina nebulaRing nebulaTwin jet nebulaHelix nebulaHorsehead nebulaEye nebulaOmega nebulaRosette nebulaEagle nebulaGhost head nebulaRunning chicken nebulaMilky waySpider nebula

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