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Euclid Finds Record-Old Quasar 662 Myr After Big Bang

7/15/2026

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Summary

Story summary

Euclid telescope discovered quasar EUCL J1729, whose light dates to 662 million years after the Big Bang.
The find beats the 2021 record of 677 million years after the Big Bang by 15 million years.
Euclid began a six-year infrared survey in 2024, mapping about one-third of the sky.
In its first 18 months Euclid added 12 faint quasars, increasing the sample beyond the nine previously known.

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Story summary

Euclid telescope discovered quasar EUCL J1729, whose light dates to 662 million years after the Big Bang.
The find beats the 2021 record of 677 million years after the Big Bang by 15 million years.
Euclid began a six-year infrared survey in 2024, mapping about one-third of the sky.
In its first 18 months Euclid added 12 faint quasars, increasing the sample beyond the nine previously known.