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    Dark-Matter-Less Galaxy?

    Dragon
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    Dark-Matter-Less Galaxy? Empty Dark-Matter-Less Galaxy?

    Post by Dragon Fri Nov 03, 2023 8:19 pm

    Dark matter — the unknown substance comprising 85 percent of all matter in the universe — is strange.

    But researchers are at least sure about one thing: Dark matter is everywhere. So team members were scratching their heads over a peculiar galaxy they spotted in March 2018 that seemed to contain hardly any dark matter.

    Subsequent work suggested that the celestial oddity did in fact contain dark matter, though the finding paradoxically lent credence to an alternative theory positing that dark matter doesn't exist at all.


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    Dark-Matter-Less Galaxy? 334pu7m
    Dragon
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    Post by Dragon Fri Nov 03, 2023 8:20 pm

    Dark-Matter-Less Galaxy? YQUSYkEszZjUhdbdjN37NH-1200-80.jpg
    Image credit: NASA, ESA, and P. van Dokkum (Yale University))

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    Dark-Matter-Less Galaxy? 334pu7m
    Dragon
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    Dark-Matter-Less Galaxy? Empty Re: Dark-Matter-Less Galaxy?

    Post by Dragon Fri Nov 03, 2023 8:22 pm



    Mystery of Galaxy’s Missing Dark Matter Deepens

    When astronomers using NASA’s Hubble Space Telescope uncovered an oddball galaxy that looks like it doesn’t have much dark matter, some thought the finding was hard to believe and looked for a simpler explanation.

    Dark matter, after all, is the invisible glue that makes up the bulk of the universe’s contents.

    All galaxies are dominated by it; in fact, galaxies are thought to form inside immense halos of dark matter.

    So, finding a galaxy lacking the invisible stuff is an extraordinary claim that challenges conventional wisdom. It would have the potential to upset theories of galaxy formation and evolution.





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