's James Webb Telescope (JWST) has uncovered a 13.5 billion-year-old galaxy that is now the oldest universe seen by human eyes.The galaxy, called GLASS-z13 (GN-z13), formed just 300 million years after the Big Bang that occurred 13.8 billion years ago.The previous record holder, discovered by the Hubble Telescope in 2015, was GN-z11 that dates back 400 million years after the universe birthed.
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