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BackAstronomers Spot Ultra-Faint Galaxy from the Universe’s Dawn
Astronomers Spot Ultra-Faint Galaxy from the Universe’s Dawn
Science
Ars Technica5/13/2026ScienceUnited States

Astronomers Spot Ultra-Faint Galaxy from the Universe’s Dawn

LAP1-B, observed 800 million years after the Big Bang, reveals clues about the first stars and dark matter

James Webb Space TelescopeLAP1-BGravitational Lensing

Quick Look

  • Using the James Webb Space Telescope, astronomers discovered LAP1-B, an ultra-faint galaxy from 13 billion light-years away, magnified by gravitational lensing.
  • Its primitive chemical composition and low heavy element levels suggest it may be the closest observed galaxy to the Universe’s first, pristine galaxies, with indications of Population III star supernovae and a massive dark matter halo.

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Using the James Webb Space Telescope, astronomers discovered LAP1-B, an ultra-faint galaxy from 13 billion light-years away, magnified by gravitational lensing. Its primitive chemical composition and low heavy element levels suggest it may be the closest observed galaxy to the Universe’s first, pristine galaxies, with indications of Population III star supernovae and a massive dark matter halo.

Read the full article on Ars Technica

Related Topics

James Webb Space Telescope
TopicsLAP1-BGravitational LensingPopulation III StarsDark Matter
This article was originally published by Ars Technica.

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