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 ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

Recent research suggests that our solar system could already be hosting alien probes, potentially observing us from a distance. This idea aligns with a 2023 statement from a Pentagon UFO chief who ...

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 ...

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 ...

WASHINGTON :In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest signs yet of possible life beyond our solar system, detecting ...

Telescopes around the world are now tracking a new visitor to our celestial neighborhood. Streaking through at a speed and trajectory that not even the Sun's immense gravity can capture, we will only ...

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of planets Sarah Knapton is the Science Editor of The Telegraph and has covered ...

Astronomers have trained telescopes on planets outside our solar system - and light years away from us. But there might be a planet from an alien solar system a bit closer to home. The mysterious ...