NASA’s Webb Telescope Observes Most Distant Known Galaxy

NASA’s Webb Telescope discovers JADES-GS-z14-0, the most distant known galaxy, formed 290 million years after the Big Bang.

On May 31, NASA’s James Webb Space Telescope announced a groundbreaking discovery of the most distant known galaxy to date.


According to NASA’s official blog, the galaxy, named JADES-GS-z14-0, formed just 290 million years after the Big Bang. With a diameter of 1600 light-years, it is both exceptionally large and bright, indicating a vast number of stars.

Milky Way

Researchers Stefano Carniani and Kevin Hainline questioned how such a bright and massive galaxy could form in less than 300 million years, a brief moment in cosmic terms.

Webb’s MIRI instrument detected light wavelengths suggesting strong ionized gas emissions from abundant hydrogen and oxygen, unusual for early galaxies, indicating multiple generations of massive stars existed before observed galaxies.

This discovery suggests that within 290 million years, the galaxy produced several generations of massive stars. Typically, stars form in about 10 million years but can take up to 20 billion years to decay.

However, the lifespan of massive stars is much shorter, so while this finding does not completely rewrite our understanding of the universe, it challenges the nature of early star formation.

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NASA’s Webb Telescope Observes Most Distant Known Galaxy

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