Astronomers have discovered the farthest star yet, a super-hot, super-bright giant that formed at the dawn of the cosmos.
In a distant galaxy more than 13 billion light-years from Earth, astronomers have discovered traces of the oldest known oxygen in the universe, as well as evidence that ancient stars “turned on” as early as 250 million years after the Big Bang.to magnify the minuscule starlight. Gravity from clusters of galaxies closer to us — in the foreground — serve as a lens to magnify smaller objects in the background.
Although Hubble has spied galaxies as far away as 300 million to 400 million years after the universe-forming big bang, their individual stars are impossible to pick out. “For those, we’re seeing the light from millions of stars all blended together,” Welch said. “In this one, it’s magnified so that we can see just this one star.”of the National Space Foundation’s NOIRlab in Tucson described the findings as “amazing work.” He was not involved in the study.
Placco said based on the Hubble data, Earendel may well have been among the first generation of stars born after the big bang. Future observations by the newly launched
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