A comet traveling outside the solar system and heading toward the Earth is much larger than scientists first believed, a ...

A stronomers are tracking a newly discovered interstellar visitor called 3I/ATLAS, and early research suggests it may be unusually massive.

NASA is tracking an object that is entering the solar system at approximately 245,000 km/h. This interstellar visitor is ...

I/ATLAS stands apart from other interstellar objects because of its size as well as pace, and will soon disappear from ...

Comet C/2025 R2 (SWAN) is a new visitor from our outer solar system. It may be easier to see as it approaches Earth next week ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

On July 1, the ATLAS (Advanced Technology Large-Aperture Space) telescope discovered comet 3I/ATLAS, "the third object from outside our solar system to be discovered so far," accor ...

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system.

Named 3I/ATLAS, the comet is only the third known interstellar object to enter our solar system, and it's the largest and ...

Astrophysicist Avi Loeb, the former chairman of Harvard's Department of Astronomy and current head of Harvard's Galileo Project, which searches for ...

A comet speeding towards the inner solar system, where Earth is located, is significantly bigger than initially thought, ...

In July, NASA reported its ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Chile identified a comet ...