3I/ATLAS has 13 times comet 67P’s heavy-hydrogen ratio in methane, suggesting its icy ingredients formed in intense cold.
The ratio of heavy hydrogen in 3I/ATLAS’s methane offers a clue to conditions in the planetary system it came from. Its unusually high ratio compared with comet 67P suggests the interstellar comet’s icy ingredients formed in intense cold.
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@physorg_comInterstellar comet 3I/ATLAS has 13 times comet 67P’s heavy-hydrogen ratio in methane, suggesting its icy ingredients formed in intense cold. @NatureAstronomy https://phys.org/news/2026-10-heavy-hydrogen-3iatlas-methane-frigid.html?utm_source=twitter.com&utm_medium=social&utm_campaign=v2
@UniverseNow00🚨☄️ Deuterium-to-hydrogen ratio in 3I/ATLAS methane is 13 times higher than in 67P — ScienceAlert A mysterious object from beyond our Solar System is revealing clues that could reach back billions of years into the universe’s ancient past. 🔬 NASA’s James Webb Space Telescope detected an extraordinary isotopic signature in methane associated with 3I/ATLAS. Its deuterium-to-hydrogen ratio is approximately 13 times higher than the ratio measured in comet 67P/Churyumov–Gerasimenko — the only other comet with a confirmed methane measurement of this kind. 🥶 What kind of cosmic environment could produce such unusual chemistry? Scientists suggest the signature may point to an extremely cold birthplace, where temperatures could have fallen to around −263°C. Under such conditions, gases freeze onto dust grains, potentially preserving chemical clues about the environment in which the comet formed. 🌑 But the mystery goes deeper. Researchers suggest that 3I/ATLAS may have originated in a protostellar environment or a disk of gas and dust surrounding a young star. Its unusual chemistry, including a reported low abundance of carbon-13, could also offer clues to its ancient origins. 👀 Could this interstellar visitor have formed billions of years before our own Solar System existed? Some estimates have suggested that 3I/ATLAS could be more than 7 billion years old, although its precise age and birthplace remain uncertain. Imagine a frozen object drifting through the darkness between the stars, carrying chemical traces from a distant cosmic environment. Stars were born, planetary systems evolved, and countless years passed — yet this mysterious wanderer may have preserved clues to conditions that no longer exist. Now, it has entered our Solar System, giving scientists a rare opportunity to investigate material from beyond our celestial neighborhood. ⚠️ There is no evidence that 3I/ATLAS is artificial or dangerous. Its real mystery is scientific: what can its unusual chemistry reveal about the distant cosmic environment that created it? 🌌 One thing is certain: the universe has a history far older and stranger than our own world. And sometimes, a visitor from interstellar darkness carries a clue to that forgotten past. 3I/ATLAS is passing through. But the secrets locked inside its ancient chemistry could help scientists rewrite parts of the story of how planetary systems form. ☄️🔭 #3IATLAS #InterstellarComet #NASA #JWST #SpaceMystery #Astronomy #DeepSpace #CosmicMystery #Universe
@SPACEdotcomThe findings are another clue towards understanding the origins of 3I/ATLAS and the planet-forming conditions around other stars. https://www.space.com/astronomy/asteroids/james-webb-space-telescope-uncovers-new-clues-about-the-origins-of-interstellar-invader-comet-3i-atlas@physorg_comInterstellar comet 3I/ATLAS has 13 times comet 67P’s heavy-hydrogen ratio in methane, suggesting its icy ingredients formed in intense cold. @NatureAstronomy https://phys.org/news/2026-10-heavy-hydrogen-3iatlas-methane-frigid.html?utm_source=twitter.com&utm_medium=social&utm_campaign=v2@UniverseNow00🚨☄️ Deuterium-to-hydrogen ratio in 3I/ATLAS methane is 13 times higher than in 67P — ScienceAlert A mysterious object from beyond our Solar System is revealing clues that could reach back billions of years into the universe’s ancient past. 🔬 NASA’s James Webb Space Telescope detected an extraordinary isotopic signature in methane associated with 3I/ATLAS. Its deuterium-to-hydrogen ratio is approximately 13 times higher than the ratio measured in comet 67P/Churyumov–Gerasimenko — the only other comet with a confirmed methane measurement of this kind. 🥶 What kind of cosmic environment could produce such unusual chemistry? Scientists suggest the signature may point to an extremely cold birthplace, where temperatures could have fallen to around −263°C. Under such conditions, gases freeze onto dust grains, potentially preserving chemical clues about the environment in which the comet formed. 🌑 But the mystery goes deeper. Researchers suggest that 3I/ATLAS may have originated in a protostellar environment or a disk of gas and dust surrounding a young star. Its unusual chemistry, including a reported low abundance of carbon-13, could also offer clues to its ancient origins. 👀 Could this interstellar visitor have formed billions of years before our own Solar System existed? Some estimates have suggested that 3I/ATLAS could be more than 7 billion years old, although its precise age and birthplace remain uncertain. Imagine a frozen object drifting through the darkness between the stars, carrying chemical traces from a distant cosmic environment. Stars were born, planetary systems evolved, and countless years passed — yet this mysterious wanderer may have preserved clues to conditions that no longer exist. Now, it has entered our Solar System, giving scientists a rare opportunity to investigate material from beyond our celestial neighborhood. ⚠️ There is no evidence that 3I/ATLAS is artificial or dangerous. Its real mystery is scientific: what can its unusual chemistry reveal about the distant cosmic environment that created it? 🌌 One thing is certain: the universe has a history far older and stranger than our own world. And sometimes, a visitor from interstellar darkness carries a clue to that forgotten past. 3I/ATLAS is passing through. But the secrets locked inside its ancient chemistry could help scientists rewrite parts of the story of how planetary systems form. ☄️🔭 #3IATLAS #InterstellarComet #NASA #JWST #SpaceMystery #Astronomy #DeepSpace #CosmicMystery #Universe@SPACEdotcomThe findings are another clue towards understanding the origins of 3I/ATLAS and the planet-forming conditions around other stars. https://www.space.com/astronomy/asteroids/james-webb-space-telescope-uncovers-new-clues-about-the-origins-of-interstellar-invader-comet-3i-atlas@physorg_comInterstellar comet 3I/ATLAS has 13 times comet 67P’s heavy-hydrogen ratio in methane, suggesting its icy ingredients formed in intense cold. @NatureAstronomy https://phys.org/news/2026-10-heavy-hydrogen-3iatlas-methane-frigid.html?utm_source=twitter.com&utm_medium=social&utm_campaign=v2@UniverseNow00🚨☄️ Deuterium-to-hydrogen ratio in 3I/ATLAS methane is 13 times higher than in 67P — ScienceAlert A mysterious object from beyond our Solar System is revealing clues that could reach back billions of years into the universe’s ancient past. 🔬 NASA’s James Webb Space Telescope detected an extraordinary isotopic signature in methane associated with 3I/ATLAS. Its deuterium-to-hydrogen ratio is approximately 13 times higher than the ratio measured in comet 67P/Churyumov–Gerasimenko — the only other comet with a confirmed methane measurement of this kind. 🥶 What kind of cosmic environment could produce such unusual chemistry? Scientists suggest the signature may point to an extremely cold birthplace, where temperatures could have fallen to around −263°C. Under such conditions, gases freeze onto dust grains, potentially preserving chemical clues about the environment in which the comet formed. 🌑 But the mystery goes deeper. Researchers suggest that 3I/ATLAS may have originated in a protostellar environment or a disk of gas and dust surrounding a young star. Its unusual chemistry, including a reported low abundance of carbon-13, could also offer clues to its ancient origins. 👀 Could this interstellar visitor have formed billions of years before our own Solar System existed? Some estimates have suggested that 3I/ATLAS could be more than 7 billion years old, although its precise age and birthplace remain uncertain. Imagine a frozen object drifting through the darkness between the stars, carrying chemical traces from a distant cosmic environment. Stars were born, planetary systems evolved, and countless years passed — yet this mysterious wanderer may have preserved clues to conditions that no longer exist. Now, it has entered our Solar System, giving scientists a rare opportunity to investigate material from beyond our celestial neighborhood. ⚠️ There is no evidence that 3I/ATLAS is artificial or dangerous. Its real mystery is scientific: what can its unusual chemistry reveal about the distant cosmic environment that created it? 🌌 One thing is certain: the universe has a history far older and stranger than our own world. And sometimes, a visitor from interstellar darkness carries a clue to that forgotten past. 3I/ATLAS is passing through. But the secrets locked inside its ancient chemistry could help scientists rewrite parts of the story of how planetary systems form. ☄️🔭 #3IATLAS #InterstellarComet #NASA #JWST #SpaceMystery #Astronomy #DeepSpace #CosmicMystery #Universe@SPACEdotcomThe findings are another clue towards understanding the origins of 3I/ATLAS and the planet-forming conditions around other stars. https://www.space.com/astronomy/asteroids/james-webb-space-telescope-uncovers-new-clues-about-the-origins-of-interstellar-invader-comet-3i-atlas@physorg_comInterstellar comet 3I/ATLAS has 13 times comet 67P’s heavy-hydrogen ratio in methane, suggesting its icy ingredients formed in intense cold. @NatureAstronomy https://phys.org/news/2026-10-heavy-hydrogen-3iatlas-methane-frigid.html?utm_source=twitter.com&utm_medium=social&utm_campaign=v2@UniverseNow00🚨☄️ Deuterium-to-hydrogen ratio in 3I/ATLAS methane is 13 times higher than in 67P — ScienceAlert A mysterious object from beyond our Solar System is revealing clues that could reach back billions of years into the universe’s ancient past. 🔬 NASA’s James Webb Space Telescope detected an extraordinary isotopic signature in methane associated with 3I/ATLAS. Its deuterium-to-hydrogen ratio is approximately 13 times higher than the ratio measured in comet 67P/Churyumov–Gerasimenko — the only other comet with a confirmed methane measurement of this kind. 🥶 What kind of cosmic environment could produce such unusual chemistry? Scientists suggest the signature may point to an extremely cold birthplace, where temperatures could have fallen to around −263°C. Under such conditions, gases freeze onto dust grains, potentially preserving chemical clues about the environment in which the comet formed. 🌑 But the mystery goes deeper. Researchers suggest that 3I/ATLAS may have originated in a protostellar environment or a disk of gas and dust surrounding a young star. Its unusual chemistry, including a reported low abundance of carbon-13, could also offer clues to its ancient origins. 👀 Could this interstellar visitor have formed billions of years before our own Solar System existed? Some estimates have suggested that 3I/ATLAS could be more than 7 billion years old, although its precise age and birthplace remain uncertain. Imagine a frozen object drifting through the darkness between the stars, carrying chemical traces from a distant cosmic environment. Stars were born, planetary systems evolved, and countless years passed — yet this mysterious wanderer may have preserved clues to conditions that no longer exist. Now, it has entered our Solar System, giving scientists a rare opportunity to investigate material from beyond our celestial neighborhood. ⚠️ There is no evidence that 3I/ATLAS is artificial or dangerous. Its real mystery is scientific: what can its unusual chemistry reveal about the distant cosmic environment that created it? 🌌 One thing is certain: the universe has a history far older and stranger than our own world. And sometimes, a visitor from interstellar darkness carries a clue to that forgotten past. 3I/ATLAS is passing through. But the secrets locked inside its ancient chemistry could help scientists rewrite parts of the story of how planetary systems form. ☄️🔭 #3IATLAS #InterstellarComet #NASA #JWST #SpaceMystery #Astronomy #DeepSpace #CosmicMystery #Universe@SPACEdotcomThe findings are another clue towards understanding the origins of 3I/ATLAS and the planet-forming conditions around other stars. https://www.space.com/astronomy/asteroids/james-webb-space-telescope-uncovers-new-clues-about-the-origins-of-interstellar-invader-comet-3i-atlas
