Interstellar Comet 3I/ATLAS: A Frozen Messenger Older Than Our Solar System
An international team led by the University of Michigan has confirmed that interstellar comet 3I/ATLAS is up to 11 billion years old, more than double the age of our solar system. Published in Nature Astronomy, the discovery reveals record-breaking deuterium levels in its frozen water, proving it formed in an extremely cold, isolated environment before its own parent star even existed.









