One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks ...

What can a piece of debris from another star tell astronomers about planets they may never see directly? The answer has changed dramatically since the first confirmed object from another star crossed ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Life could have arrived on Earth in ancient collisions with rocks from other solar systems (Image: Hubble/Princeton) Life could have arrived on Earth in rocks from other solar systems, scientists ...

Around 70,000 years ago, a small, reddish star came near our solar system and disturbed comets and asteroids – just when modern humans were beginning to leave Africa. The star – Scholz’s star – named ...

A visitor from another star system is creating excitement in the astronomy community. The comet 3I/ATLAS which was first spotted in July 2025 contains chemical clues that scientists can use to ...

The first bubble of hot gas seen around another star has been spotted around the "Moth," just 117 light-years away.

The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's ...

Life may not get blasted off any of the known "super-Earth" worlds as readily as it can from our planet, scientists find. The discovery suggests that any intelligent aliens that develop on such ...