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Oldest 'Dead' Galaxy Discovered by James Webb Space Telescope

Astronomers using the JWST have identified the oldest known 'dead' galaxy, challenging previous models of early universe evolution.

An image from the James Webb Space Telescope highlighting JADES-GS-z7-01-QU, the oldest "dead" galaxy ever observed
This JWST image shows thousands of galaxies of various shapes and colours on the black background of space. It's called the GOODS North Field. The pullout features GN-z11, an ancient and extremely luminous galaxy, seen as a fuzzy yellow dot. Image Credit: NASA, ESA, CSA, B. Robertson (UC Santa Cruz), B. Johnson (CfA), S. Tacchella (Cambridge), M. Rieke (University of Arizona), D. Eisenstein (CfA) CC BY 4.0 INT
Image: Pixabay

Overview

  • The galaxy, observed just 700 million years after the Big Bang, ceased star formation over 13 billion years ago.
  • This discovery provides new insights into the early universe, suggesting that galaxy life spans were significantly shorter than previously thought.
  • Researchers utilized the JWST's advanced instruments to confirm the galaxy's quiescent state, indicating a rapid halt in star formation.
  • The findings challenge existing models of galaxy evolution, highlighting the need for revised theories based on early universe observations.
  • Further research could reveal more about the mechanisms behind galaxy quenching and the potential for 'dead' galaxies to reignite star formation.