Besides the original cult hit film, the sci-fi franchise Alien Nation also encompasses a TV series and several TV movies ...

The controversial Harvard astronomer is one of the main sources of the "alien mothership" hypothesis. This is what he thinks, ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

Incredible but true! A Harvard astrophysicist puts forward a startling hypothesis: comet 3I/ATLAS could be an alien ...

Scientists in Boulder are using existing NASA spacecraft to track a rare interstellar comet called 31/ATLAS as it travels through Earth’s solar system.

Interstellar object 3I/ATLAS nears Earth with a bizarre 'anti-tail' and 14 anomalies. Is it a comet or alien tech?

American astrophysicist and science communicator Neil deGrasse Tyson, and English physicist, science communicator, and musician Professor Brian Cox have given the world their thoughts on interstellar ...

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

I/ATLAS interstellar comet or alien spacecraft? NASA released new images of comet 3I/ATLAS after a rare flyby near Earth. Scientists explain what the object is, how to see it today, and why it matters ...

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.