3I/ATLAS: A Methanol-Rich, CO2-Dominated Interstellar Visitor as a Time Capsule from Another Star
To the point
3I/ATLAS is the third confirmed interstellar visitor to our solar system, and JWST and ALMA observations show a CO2-rich coma and methanol-dominated outgassing, with methanol coming from both the nucleus and icy grains while HCN comes mainly from the nucleus, suggesting formation or evolution in a chemically distinct environment from Solar System bodies.
