The triple star system is sending comets, asteroids and meteors our way, and the number of interstellar objects entering the solar system will rise.

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar system. Now, a team of researchers have taken a completely different ...

A rare visitor from another star system has been spotted: the interstellar comet 3I/ATLAS! It was detected July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ATLAS. Most ...

A Manhattan-sized interstellar comet was spotted blazing through our solar system — marking only the third time a mysterious object from beyond our cosmic neighborhood has been observed.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system. First named A11pl3Z and now designated ...

Astronomers have confirmed that a recently spotted object is an interstellar visitor, and appears to have come from the center of our galaxy.

New Hubble data on the 3I/ATLAS interstellar comet points to it having a nucleus between 1,000 feet and 3.5 miles, speed at 130,000 mph.

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual ...