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Tag: galaxies

  • Early galaxy seen by JWST contains giant young stars and supernovae

    Early galaxy seen by JWST contains giant young stars and supernovae

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    New Scientist Default Image

    GLASS-z12, a very early galaxy viewed by the James Webb Space Telescope

    Naidu et al, P. Oesch, T. Treu, GLASS-JWST, NASA/CSA/ESA/STScI

    Astronomers have used the James Webb Space Telescope (JWST) to reveal extraordinary details about a galaxy in the early universe, seen as it was just 360 million years after the big bang.

    Since JWST launched, it has been finding galaxies that are so distant the light now reaching us from them was emitted during the early life of the cosmos. These galaxies have been more numerous and appear brighter than expected, suggesting there is something missing in our…

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  • Bizarre galaxy in the early universe died extremely young

    Bizarre galaxy in the early universe died extremely young

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    The James Webb Space Telescope can capture detailed images of distant galaxies

    JADES Collaboration

    A strange galaxy in the early universe lived fast and died young. It is the most distant “dead” galaxy, meaning it is no longer forming any new stars, ever spotted.

    The galaxy JADES-GS+53.15508-27.80178 was discovered in 2010, but astronomers at the time were not able to characterise it in detail. Francesco D’Eugenio at the University of Cambridge and his colleagues observed it again with the James Webb Space Telescope (JWST) and found that its star formation…

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  • Huge set of galaxies is set to form largest cluster in known universe

    Huge set of galaxies is set to form largest cluster in known universe

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    Artist’s impression of the quasar that astronomers used to search for early galaxies

    ESO/M. Kornmesser

    One of the largest quasars in the early universe has helped to reveal a vast “protocluster” of nascent galaxies that is expected to grow more massive than any galaxy cluster we know of.

    Protoclusters are the primordial beginnings of the galaxy clusters we see in our region of the universe, before they are bound together by gravity. Astronomers usually look for them by casting their telescopes over wide swathes of space, hoping to find regions with…

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