Comet 3I/ATLAS May Be Over 7 Billion Years Old
The interstellar comet 3I/ATLAS may have formed more than 7 billion years before the Sun. NASA's James Webb Space Telescope study found unusual chemical clues indicating its ancient origins and formation conditions. Its deuterium-to-hydrogen ratio is 13 times higher than comet 67P/Churyumov-Gerasimenko, suggesting a unique chemical history.
Economic Times·



