Interstellar Comet 3I/ATLAS experienced a dramatic increase in activity after its closest approach to the Sun, with all types of ice sublimating and releasing organic molecules like water, carbon dioxide, and hydrocarbons. This suggests a unique formation history and composition.
The interstellar comet 3I/Atlas, only the third confirmed interstellar object ever detected, is being closely observed by spacecraft like Juice and Hubble as it approaches the Sun and Earth.
