If it’s not an asteroid or a comet, it might be something stranger.

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro ...

Scientists are looking into the possibility that 'alien spaceship' 3I/ATLAS could have come from within our own solar system. This would challenge the belief that the comet was an "interstellar object ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

Three researchers recently published a paper speculating about whether an object (likely a comet) could be "hostile" alien technology Scientists estimate the object to be more than 12-miles-wide, ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

There may be 19 asteroids in orbit around the sun that come from somewhere else entirely. If true, we could visit an alien 'world' without ever leaving the confines of the solar system. Share on ...

In a clip from the BBC’s Wonders of the Solar System, Brian Cox visits an ‘alien’ within a cave that’s a death trap for ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents preserved fragment of ancient planetary system ...