A star that is now more than 27 billion light years from Earth has been spotted using the Hubble Space Telescope, shining a light on the universe as it existed just 900 million years after the big bang.
means that while the light from Earendel took about 12.8 billion years to reach us, it is now probably about 27.7 billion light years away. “It’s getting back to a time when [our] universe was a lot different than it is today,” says Welch. Further observations of the star could allow researchers to determine exactly how stars in the early universe were different from those that formed more recently.
Depending on the actual size of Earendel, it could also help solve the mystery of how supermassive black holes formed in the early universe. “If it does turn out to be a really, really massive star, then it could be the sort of thing that could form an intermediate black hole that could be the seed to a supermassive black hole,” says Welch.to examine Earendel and find out its true size and temperature.
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