The halo, known as an Einstein ring, encircles a galaxy 590 million light-years away, considered close by cosmic standards. A light-year is 5.8 trillion miles. Astronomers have known about this galaxy ...
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The European space telescope Euclid discovers an "Einstein ring" with an atypical halo of lightEurope's Euclid space telescope has detected a rare ring of bright light around a nearby galaxy, astronomers have said. The halo, known as an "Einstein ring," encircles a galaxy 590 million light ...
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