3I/ATLAS: A Methanol-Rich Interstellar Visitor Revealing a Distinct Formation Environment

To the point

An interstellar visitor called 3I/ATLAS sped past the Sun at about 60 km/s with a coma rich in methanol—much more than normal—plus high carbon dioxide, iron, and nitrogen, implying it formed in a much colder or chemically different environment than anything in our solar system, likely as a hyperactive comet with methanol released from detached ices as the Sun warmed rather than from the nucleus alone, with natural processes favored despite the unusual chemistry; it is the third clearly identified interstellar object and suggests more visitors may come as better telescopes reveal detail, though the work is still under review.