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NASA’s James Webb Space Telescope (JWST) is probably best known for peering deep into the early cosmos, searching for the universe’s oldest stars. But it’s also making amazing discoveries right in our own cosmic backyard. 

For the first time, the powerful telescope has spotted a water-rich comet in the inner solar system, NASA recently announced. The finding may help to solve the long-held mystery of how Earth got its water, the research team said in a study published May 15 in the journal Nature (opens in new tab)

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