"Each interstellar comet brings a little bit of its history, its fossils, from elsewhere."

Interstellar invader comet 3I/ATLAS formed in a world much colder than the solar system

Source: space
Source Link: https://www.space.com/astronomy/comets/interstellar-invader-comet-3i-atlas-formed-in-a-world-much-colder-than-the-solar-system