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Oldest Quasars Ever Discovered Add to 'Perplexing' Space Mystery

Summary by Phys.org
The Euclid space telescope has spotted the oldest quasars—the brightest objects in the universe—ever discovered, deepening a cosmic mystery that has been puzzling scientists.

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The oldest quasars discovered by the Euclid space telescope date back to when the universe was only about 670 million years old. Astronomers have identified 31 such objects, including two of the oldest known to science, providing new insights into the origins of the cosmos. The article, "Oldest quasars discovered by the Euclid telescope reveal secrets of the early universe," is from the website Everything That Matters.

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The Euclid space observatory, put into orbit by the European Space Agency in 2023, has achieved a finding that rewrites the limits of observational astronomy by identifying 31 quasars belonging to the most primordial epochs of the cosmos, an unprecedented figure that more than doubles the number of these objects known to date [...]

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ESA's Euclid Space Telescope has identified some 30 primitive quasars, including the two oldest ever observed. They date only 670 million years after the Big Bang.

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Phys.org broke the news in United Kingdom on Sunday, July 12, 2026.
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