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Oldest Quasars by Euclid
July 11 , 2026
14 hrs 0 min
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- Scientists have discovered the oldest known quasars using the Euclid Space Telescope, helping to study the early universe.
- Astronomers discovered 31 quasars, including the two oldest ever observed, dating back to when the universe was about 670 million years old.
- A quasar is the extremely bright core of a distant galaxy powered by a supermassive black hole.
- The discoveries were made using the European Space Agency (ESA)'s Euclid Space Telescope, launched in 2023.
- The quasars belong to the Epoch of Reionisation, when the first stars and galaxies formed after the universe's "dark ages."
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