Space.com reported that new research on interstellar comet 3I/ATLAS points to formation in a colder environment than the early solar system, based on unusual volatile and isotopic signatures.
The finding matters because 3I/ATLAS is only the third known interstellar object, so its chemistry offers a rare sample of planet-forming conditions beyond the Sun's neighborhood.
Universe Today covered related analysis of the comet's methane and deuterium-rich water signatures, reinforcing that continued observations of 3I/ATLAS can help compare distant protoplanetary environments with the material that built our own solar system.
