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    New radio burst method helps locate universe’s missing ordinary matter

    July 23, 2026, Categories  Astronomy/Space

    Gas distribution around galaxies
    Caption: Simulated gas distribution (blue, green, and yellow colors) around galaxies (white dots on the image). The study finds that gas in our Universe extends farther from galaxies than most simulations predict, indicating strong activity from galaxies that have expelled gas away from galaxy groups.
    Credit: IllustrisTNG

    Stars and galaxies make up much of the universe’s ordinary, observable matter. But for decades, scientists have wrestled with a cosmic conflict: There should be much more.

    Physicists have good estimates of how much matter was present in the early universe. Shortly after the Big Bang, roughly 83% of all matter in the universe was composed of invisible dark matter, with ordinary matter making up the rest...

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