Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...

NASA has responded to speculation that mysterious interstellar object 3I/ATLAS is actually an alien starship preparing to invade Earth.

Ever since a mysterious interstellar object, dubbed 3I/ATLAS, was first spotted screaming into our solar system, famed ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, ...

For decades, people have asked if life ever existed on Mars. The question moved from science fiction to careful science with ...

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything ...

NASA's InSight lander has collected seismic data from Mars that reveals dozens of mysterious giant structures hidden deep ...

NASA’s Perseverance rover has recently discovered the biosignature, revealing the possibility of ancient life that once ...

NASA scientists found old collision pieces on Mars. These pieces are deep inside Mars. They show big crashes from long ago. Mars is like a time capsul ...

I/ATLAS, interstellar comet or alien spacecraft, to fly by Mars next month, giving European and international spacecraft a ...

A research team led by geophysicists at UC San Diego’s Scripps Institution of Oceanography provides an explanation for ...