Astronomers using the James Webb Space Telescope have identified a strange ultra-bright object from the early universe.

Before solving that mystery, however, astronomers must determine how quickly those distant planets are truly spinning. Slower ...

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 ...

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 ...

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 ...

WHAT are the billions of stars and planets beyond our solar system up to? Do they behave like ours or are we a freak of nature? While definitive answers are far from nailed down, a recent deluge of ...

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

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 ...