NASA’s James Webb Space Telescope has already captured countless images, but what really stands out are the galaxy mergers. Why? Astronomers have not been able to figure out why they detected light from hydrogen atoms which should have been entirely blocked by the pristine gas that formed after the Big-Bang.
Using new Webb data, they discovered small, faint objects surrounding the very galaxies that show the mysterious hydrogen emission. When this data is combined with state-of-the-art simulations of galaxies in the early Universe, theey show that the chaotic merging of these neighboring galaxies is the source of this hydrogen emission.
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One of the most puzzling issues that previous observations presented was the detection of light from hydrogen atoms in the very early Universe, which should have been entirely blocked by the pristine neutral gas that was formed after the Big-Bang. Many hypotheses have previously been suggested to explain the great escape of this ‘inexplicable’ emission,” said Callum Witten, University of Cambridge Researcher.
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