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Space
Space
Science
Sharmila Kuthunur

Tiny galaxies may have helped our universe out of its dark ages, JWST finds

White diamond symbols mark the locations of 20 of the 83 newfound young, low-mass galaxies undergoing intense star formation when the universe was just 800 million years old. Despite their small sizes, these galaxies are powerful sources of ultraviolet radiation, making them strong candidates for helping reionize the early universe. .

Evidence continues to assemble that dwarf galaxies played a larger role in shaping the early universe than previously thought.

Astronomers analyzing data from the James Webb Space Telescope (JWST) have uncovered a population of tiny, energetic galaxies that may have been key players in clearing the cosmic fog that shrouded the universe after the Big Bang.

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