Since beginning operations last year, the James Webb Space Telescope has provided an astonishing glimpse of the early history of our universe, spotting a collection of galaxies dating to the enigmatic epoch called cosmic dawn.
Images of six candidate massive galaxies, seen 540 million to 770 million years after the Big Bang, are shown in this undated handout image based on observations by NASA's James Webb Space Telescope, as one of them could contain as many stars as our present-day Milky Way, but is 30...galaxies during the universe's infancy defied expectations - too big and too soon.
So, according to the study, these galaxies may have been relatively small, as expected, but might glow just as brightly as genuinely massive galaxies do - giving a deceptive impression of great mass - because of brilliant bursts of star formation. "In our new paper, we show quantitatively using our simulations that the bursts of star formation produce flashes of light that can explain the very bright galaxies observed by Webb. And the reason this is so significant is that we explain these very bright galaxies without having to break the standard cosmological model," Faucher-Giguère added.
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James Webb Space Telescope spots dozens of physics-breaking rogue objects floating through space in pairsBen Turner is a U.K. based staff writer at Live Science. He covers physics and astronomy, among other topics like tech and climate change. He graduated from University College London with a degree in particle physics before training as a journalist. When he's not writing, Ben enjoys reading literature, playing the guitar and embarrassing himself with chess.
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