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The interstellar comet 3I/ATLAS may be older than the Sun based on its chemical composition indicating an ancient origin.

Space ExplorationScienceJul 6, 2026score 0.552 posts · 0 replies across 2 instances
The thread discusses the discovery of the interstellar comet 3I/ATLAS, which may be older than the Sun. Scientists used the ESO's Very Large Telescope to analyze its composition, suggesting it originated from an ancient star system. This finding has implications for understanding the origins of interstellar objects and the early universe.

Claims

The interstellar comet 3I/ATLAS may be older than the Sun based on its chemical composition indicating an ancient origin.
Parent: AstronomyEntity: Interstellar Comet 3I/ATLASImpact: positiveDate: Jul 6, 2026 - Jul 7, 2026Target: The age of the interstellar comet 3I/ATLAS relative to the Sun

Source posts

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RESEARCH ☄️ Comet 3I/ATLAS, only the third interstellar object ever seen, may be older than the Sun. An international team measured its carbon and nitrogen isotopes with ESO's Very Large Telescope, revealing a chemistry that points to an ancient, low-metallicity star. 👉 https://www.sciences.uliege.be/cms/c_13694254/en/the-interstellar-comet-3i/atlas-is-older-than-our-sun @esoastronomy @nature
16 boosts · 17 favs · 0 replies · Jul 6, 2026
@[email protected]
ICYMI The 3I/ATLAS comet might be older than the Sun itself. Astronomers used our Very Large Telescope to study the composition of 3I/ATLAS, the brightest interstellar object ever spotted ☄️ They found that the comet likely originated in the outskirts of an old star system, indicating that it may be much older than the Sun. Read the full story: https://www.eso.org/public/news/eso2608/ and check out our video summary 🎥 👇 #astrodon #astronomy #astrophysics #space #science
20 boosts · 0 favs · 0 replies · Jul 7, 2026
#astrodon#astronomy#astrophysics#space#science