A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

WASHINGTON (Reuters) -Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object has been observed visiting our solar system ...

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. (NASA/JPL-Caltech via AP) ...

NASA finds interstellar comet near Jupiter, will be closest to Earth in October The third known interstellar object to pass through our solar system poses no threat to Earth.

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first spotted on July 1 by the NASA-funded Asteroid Terrestrial-impact Last ...

This post was updated July 6 at 8:01 p.m. Marianna Bezhanyan created art symbolizing Russian identity. The Russian government then labeled her as an “extremist.” Bezhanyan, a rising fourth ...

Fireball meteor seen streaking across sky over Southeastern US, reportedly crashes into Georgia home ...

Perplexity's Comet AI browser is now available on select Windows PCs, bringing its famed agentic experience to more users.