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What Killed Galaxies in the Early Universe?

July 30, 2026
What Killed Galaxies in the Early Universe?
By Carolyn Collins Petersen (https://ift.tt/YksIVeO)

An artist’s impression of the galaxy CRISTAL-02, with a huge plume of cold gas extending away from it. This plume is almost as long as the galaxy itself, which is a telltale sign that gas is being driven out of the galaxy. Credit Joshua Worth via Creative Commons CC-BY license Licence type Attribution (CC BY 4.0)

Galaxies in the infancy of the Universe are the building blocks of more modern galaxies. They began as small "shreds" of material that coalesced over time to form larger ones. That's why astronomers use observatories such as the James Webb Space Telescope (JWST) to study the young Universe. The light from those early objects appears in the infrared part of the spectrum, which JWST is tuned to see.



July 31, 2026 at 03:30AM
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