CloudMashableabout 6 hours ago
The interstellar comet was probably way older than scientists thought
4 min read
Comet 3I/ATLAS, the third confirmed interstellar object, likely formed 12 billion years ago, making it one of the oldest planet-building materials ever observed. NASA's James Webb Space Telescope measured unusual isotope values, indicating the comet formed in an extremely cold, primitive region of the early Milky Way.
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