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 ...

The object, estimated to be the size of a city block, is only the third known interstellar visitor to our solar system since scientists began keeping track of such things.

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 ...

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

A comet from another solar system has given rise to reports that it is in fact an alien spaceship. The comet – named 3I/ATLAS – was discovered this summer and led to excitement because it appears to ...

SUDDENLY, out of darkness, a ghostly city of gnarled white towers looms over the submersible. As the sub approaches to scrape a sample from them, crew-member Kevin Hand spots something otherworldly: a ...

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 ...

Peering through a cosmic keyhole at distant baby star, astronomers may have opened a new window on the deep past of our own solar system. Weighing in at 0.6 solar mass, HOPS-315 should someday grow to ...

Here’s what you’ll learn when you read this story: Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the ...

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