galacticwind

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  • NASA/JPL-Caltech

    Half of the matter around us comes from distant galaxies

    by 
    Swapna Krishna
    Swapna Krishna
    07.26.2017

    For a long time, the prevailing theory of sources of matter was that it was mostly local; the atoms that make up our planet and our bodies were from pretty close by. But now, researchers at Northwestern University have cast doubt on this hypothesis. Their research indicates that up to half of the matter in the Milky Way comes from far-flung galaxies.