# Euclid finds the most ancient quasars known, from the Universe's first 670 million years

Canonical page: https://technooptimist.io/stories/euclid-finds-the-most-ancient-quasars-known-from-the-universe-s-first-1df82764
Date: 6 Jul 2026
About: [European Space Agency](https://technooptimist.io/companies/esa.md) · [Euclid](https://technooptimist.io/spaceflight/euclid.md)
Original source: https://www.esa.int/Science_Exploration/Space_Science/Euclid/Euclid_discovers_the_most_ancient_quasar_in_the_Universe

Using Wide Survey data, astronomers found 31 new early-Universe quasars, 12 at redshift 7 or above, more than doubling the known number that old. The two most distant, at redshifts 7.77 and 7.69, beat the 2021 record of 7.64. Earlier searches needed over a decade to find the first ten such quasars; Euclid found more in a single year.

## Key facts

- Published in Astronomy & Astrophysics, led by Daming Yang of Leiden University.
- Both record holders lie just over 13 billion light-years away.
- Quasars this early test how giant black holes grew so fast after the Big Bang.

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