Comets | Page 5 of 22 | Astronomy.com

Ask Astro: How do astronomers know if an object came from another star?

Photo gallery: Comet NEOWISE shines in the morning sky

Comet C/2020 F3 (NEOWISE) springs a naked-eye surprise

Hubble captures breakup of Comet ATLAS

Cosmic visitor ‘Oumuamua may have been ripped from an alien world

Comet ATLAS may soon be visible to the naked eye

Alien Life, Solar System

Could alien life hitchhike to Earth on space rocks from other stars?

Scientists chart the shifting colors of a comet’s “seasons”

See interstellar comet Borisov on its way toward the Sun

First interstellar comet may soon break apart as it nears the Sun

This interstellar space rock looks a lot like our own solar system’s comets

Astronomers expect to discover many more interstellar objects