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.

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are paying us a visit.

A mysterious object suspected to be an alien spacecraft approaching Earth has revealed an "anti-tail" for the first time as it races away from the sun. Fresh images show the "interstellar anomaly" ...

A recently discovered interstellar comet, 3I/ATLAS, is causing a stir in the scientific community. Most comets detected so far are local to our solar system, but 3I/ATLAS is a rare interstellar ...

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

A Harvard University astrophysicist has ignited intense debate after saying he cannot rule out the possibility that ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Harvard's Avi Loeb claims the 3I/ATLAS object might be an alien battleship, but NASA experts insist the data confirms it is ...

An interstellar object roughly the size of Manhattan has captured scientists’ attention — and one prominent Harvard astrophysicist believes it could be something far beyond natural. According to the ...

NASA has thrown cold water on Harvard astrophysicist Avi Loeb’s theory that interstellar visitor 3I/ATLAS was sent to us by an extraterrestrial civilization — a sobering albeit unsurprising conclusion ...

A pilot, who was flying a private plane, was astounded after spotting a mysterious object he said could probably be an alien spacecraft, or perhaps 'strange alien creatures', as he saw it flying.

Laura Nicole Driessen is an ambassador for the Orbit Centre of Imagination at the Rise and Shine Kindergarten, in Sydney's Inner West. On October 29, Comet 3I/ATLAS reached its closest point to the ...