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JWST Discovers Massive Galaxies in Early Universe UPSC NOTE

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  Why in news Recently, James Webb Space Telescope (JWST) discovered unexpectedly large and fully-developed galaxies in the early universe ,...

 Why in news

  • Recently, James Webb Space Telescope (JWST) discovered unexpectedly large and fully-developed galaxies in the early universe, specifically around 400-650 million years after the Big Bang.

  • This challenges the existing standard model of galaxy formation, prompting further investigation into the early universe's conditions.

Recent Discovery of Massive Galaxies

  • Astronomers found that instead of infant galaxies, there were "monstrous" structures that appeared fully developed at a much earlier stage than expected.

  • JWST’s advanced infrared capabilities allow it to detect faint distant galaxies that earlier telescopes could not see.

  • The study reported a greater number of massive galaxies than anticipated in this early period.

What the Discovery Says About

  • The discovery suggests that early galaxies may have formed stars more efficiently than those today, necessitating a reassessment of galaxy formation models.

  • The presence of massive black holes in these galaxies may have previously led to overestimations of their mass due to the additional light they emit

  • The findings still align with the standard model, suggesting extreme conditions and abundant gas in the early universe contributed to star formation rates, supporting existing theories rather than overturning them.

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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: JWST Discovers Massive Galaxies in Early Universe UPSC NOTE
JWST Discovers Massive Galaxies in Early Universe UPSC NOTE
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Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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