From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

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

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

Because Titan is tidally locked, the same side of the moon faces Saturn all the time, just like our own moon and Earth.

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

Is 3I/ATLAS a comet or an alien ship? Harvard's Avi Loeb warns of a 'serial killer' visitor as the interstellar object makes ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

NASA has pinpointed the exact moment when interstellar comet 3I/ATLAS, the object suspected to be an alien spacecraft, made ...

The interstellar visitor Comet 3I/ATLAS passed Earth with Harvard astrophysicist Avi Loeb saying it could be an alien probe.

Extraterrestrials could be paying us a visit, as scientists have warned that they cannot rule this out from happening. An object, known as 3i/ATLAS, on Friday passed by Earth at 130,000mph and a ...

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