7 sources·Science

New Insights on Dark Energy Challenge Current Cosmological Theories

Recent findings indicate that dark energy, driving the universe's expansion, may be weakening over time, questioning established cosmological models.

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  1. Largest ever map could change what we know about the universe's fate

    However, observations by the Dark Energy Spectroscopic Instrument (DESI) at the Kitt Peak National Observatory in Arizona are increasingly hinting that dark energy may in fact be weakening over time, suggesting we may need to change the way we think about the universe.

    Largest ever map could change what we know about the universe's fate

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  2. How will the universe end? A changing understanding of dark energy may provide a new answer

    Results presented at a meeting of the American Physical Society Wednesday bolster the case that the force is weakening, though scientists are not yet certain and they still haven’t worked out what this means for the rest of their understanding of the universe.

    How will the universe end? A changing understanding of dark energy may provide a new answer

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  3. Hints grow stronger that dark energy changes over time

    The DESI data itself is not incremental.

    Hints grow stronger that dark energy changes over time

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  4. Dark energy: mysterious cosmic force appears to be weakening, say scientists

    Dark energy has been assumed to be a constant, which would imply the universe will meet its end in a desolate scenario called the “big freeze”, when everything is eventually so far apart that even light cannot bridge the gap between galaxies.

    Dark energy: mysterious cosmic force appears to be weakening, say scientists

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  5. Shocking Dark Energy Findings Challenge the Standard Model of the Universe

    Making sense of an evolving dark energy would almost certainly involve amending the foundations of physics in order to unlock the true history and fate of our universe.

    Shocking Dark Energy Findings Challenge the Standard Model of the Universe

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  6. Dark Energy experiment shakes Einstein's theory of Universe

    The data has not yet passed the threshold of being described as a discovery, but has led many astronomers, such as Scotland's Astronomer Royal, Prof Catherine Heymans, of Edinburgh University, to sit up and take notice.

    Dark Energy experiment shakes Einstein's theory of Universe

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  7. How Will the Universe End? A Changing Understanding of Dark Energy May Provide a New Answer

    Results presented at a meeting of the American Physical Society Wednesday bolster the case that the force is weakening, though scientists are not yet certain and they still haven't worked out what this means for the rest of their understanding of the universe.

    How Will the Universe End? A Changing Understanding of Dark Energy May Provide a New Answer

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Updated: Mar 19th, 2025, 10:21 PM ET

Summary

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Emerging data from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy, long viewed as a constant, may actually be weakening. This leaves astrophysicists reconsidering cosmological models that predict the universe's fate. The findings stem from analyzing nearly 15 million galaxies and quasars over 11 billion years, laying the groundwork for a potential paradigm shift in cosmology. However, the evidence has yet to meet the gold standard for definitive claims, calling for further investigation and validation from additional studies in the field.


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New Insights on Dark Energy Challenge Current Cosmological Theories - Pano News