Its path through space will take it between the orbits of Earth and Mars before it heads back out toward interstellar space ...

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar ...

Nearly a month ago, a mysterious object was seen hurtling through the solar system and later confirmed as an interstellar ...

Astronomers think small space rocks from beyond our solar system routinely strike Earth—but proving it isn’t easy ...

More recently, astronomers have proposed a theory for its volatile nature, which explains the star's seemingly erratic ...

A rocky planet with a 24-hour orbit and an ice giant that takes five years to complete its orbit have been detected orbiting ...

New simulations have narrowed down where the newly discovered interstellar comet 3I/ATLAS likely came from, revealing it could be more than 3 billion years older than the solar system.

The newly discovered space rock may be older than our entire solar system, and you may get the chance to see it ...

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

The telescope in Chile caught this comet. Most known comets orbit the sun and are bound by the gravity of our solar system.