{"id":24351,"date":"2025-03-19T21:00:10","date_gmt":"2025-03-19T22:00:10","guid":{"rendered":"https:\/\/medexperts.pro\/?p=24351"},"modified":"2025-03-19T22:26:38","modified_gmt":"2025-03-19T22:26:38","slug":"astronomers-get-more-than-a-hint-that-dark-energy-isnt-what-they-thought","status":"publish","type":"post","link":"https:\/\/medexperts.pro\/?p=24351","title":{"rendered":"Astronomers Get \u2018More Than a Hint\u2019 That Dark Energy Isn\u2019t What They Thought"},"content":{"rendered":"
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An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy \u2014 a mysterious phenomenon pushing our universe to expand ever faster \u2014 is not a constant force of nature but one that ebbs and flows through cosmic time.<\/p>\n

Dark energy, the new measurement suggests, may not resign our universe to a fate of being ripped apart across every scale, from galaxy clusters down to atomic nuclei. Instead, its expansion could wane, eventually leaving the universe stable. Or the cosmos could even reverse course, eventually doomed to a collapse that astronomers refer to as the Big Crunch.<\/p>\n

The latest results bolster a tantalizing hint<\/a> from last April that something was awry with the standard model of cosmology, scientists\u2019 best theory of the history and the structure of the universe. The measurements, from last year and this month, come from a collaboration running the Dark Energy Spectroscopic Instrument, or DESI, on a telescope at Kitt Peak National Observatory in Arizona.<\/p>\n

\u201cIt\u2019s a bit more than a hint now,\u201d said Michael Levi, a cosmologist at Lawrence Berkeley National Laboratory and the director of DESI. \u201cIt puts us in conflict with other measurements,\u201d Dr. Levi added. \u201cUnless dark energy evolves \u2014 then, boy, all the ducks line up in a row.\u201d<\/p>\n<\/div>\n<\/div>\n

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The announcement was made at a meeting of the American Physical Society in Anaheim, Calif., and accompanied by a set of papers<\/a> describing the results, which are being submitted for peer review and publication in the journal Physical Review D.<\/p>\n

\u201cIt\u2019s fair to say that this result, taken at face value, appears to be the biggest hint we have about the nature of dark energy in the ~25 years since we discovered it,\u201d Adam Riess, an astrophysicist at Johns Hopkins University and the Space Telescope Science Institute in Baltimore who was not involved in the work but shared the 2011 Nobel Prize in Physics<\/a> for discovering dark energy, wrote in an email.<\/p>\n

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An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy \u2014 a mysterious phenomenon pushing our universe to expand ever faster \u2014 is not a constant force of nature but one that ebbs and flows through cosmic time.Dark energy, the new measurement suggests, may not resign our universe to a fate of being ripped apart across every scale, from galaxy clusters down to atomic nuclei. Instead, its expansion could wane, eventually leaving the universe stable. Or the cosmos could even reverse course, eventually doomed to a collapse that astronomers refer to as the Big Crunch.The latest results bolster a tantalizing hint from last April that something was awry with the standard model of cosmology, scientists\u2019 best theory of the history and the structure of the universe. The measurements, from last year and this month, come from a collaboration running the Dark Energy Spectroscopic Instrument, or DESI, on a telescope at Kitt Peak National Observatory in Arizona.\u201cIt\u2019s a bit more than a hint now,\u201d said Michael Levi, a cosmologist at Lawrence Berkeley National Laboratory and the director of DESI. \u201cIt puts us in conflict with other measurements,\u201d Dr. Levi added. \u201cUnless dark energy evolves \u2014 then, boy, all the ducks line up in a row.\u201dThe announcement was made at a meeting of the American Physical Society in Anaheim, Calif., and accompanied by a set of papers describing the results, which are being submitted for peer review and publication in the journal Physical Review D.\u201cIt\u2019s fair to say that this result, taken at face value, appears to be the biggest hint we have about the nature of dark energy in the ~25 years since we discovered it,\u201d Adam Riess, an astrophysicist at Johns Hopkins University and the Space Telescope Science Institute in Baltimore who was not involved in the work but shared the 2011 Nobel Prize in Physics for discovering dark energy, wrote in an email.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and\u00a0log into\u00a0your Times account, or\u00a0subscribe\u00a0for all of The Times.Thank you for your patience while we verify access.Already a subscriber?\u00a0Log in.Want all of The Times?\u00a0Subscribe.<\/p>\n","protected":false},"author":1,"featured_media":24353,"comment_status":"close","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-24351","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"_links":{"self":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/24351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=24351"}],"version-history":[{"count":2,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/24351\/revisions"}],"predecessor-version":[{"id":24354,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/24351\/revisions\/24354"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/media\/24353"}],"wp:attachment":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}