In September 2017, a very strange object streaked fast across the solar system and passed close to the sun before heading away. Shiny, oblong and potentially hundreds of feet in length, the object was ...

In July 2025, scientists discovered a mysterious intergalactic object that was "most likely" an alien ship that could reach Earth by November 2025. Rumors of an incoming alien attack invaded some ...

Mysterious space object was possible alien probe A mysterious space object spotted by astronomers last fall might have been an alien probe, according to a new paper by Harvard researchers.

Discover how the Mars orbiter captured unprecedented images of interstellar comet, offering unique glimpse into the chemistry of another star system, which Earth telescopes couldn't.

Take a deep breath. Reports that interstellar comet 3I/ATLAS is breaking apart have been greatly exaggerated – and radio signals received don't mean the object is an alien probe. In fact, quite the ...

The Black Knight satellite conspiracy claims that an ancient alien probe has orbited Earth for 13,000 years, silently observing humanity. The theory traces its roots to early radio experiments by ...

A lot of serious scientists are searching for signs of alien life. Most of them are looking really, really far away—often in other star systems. But Harvard physicist Avi Loeb is looking nearby, in ...

A prominent Harvard physicist will spend US$1.5 million on an expedition to Papua New Guinea in search of the remnants of a meteor he believes might be an alien probe. The ambitious expedition is ...

The question sounds ripped straight from a sci-fi blockbuster like Arrival or 2001: A Space Odyssey, yet it became a very real source of furious, months-long online debate. The cosmic object at the ...

Avi Loeb, the chairman of Harvard’s astronomy department, will scour the depths of the ocean in search of remnants that could prove aliens have contacted Earth.