A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic backyard, ...

Astronomers studying the intriguing comet 3I/ATLAS on Monday said that this visitor is incredibly ancient, potentially nearly ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of planets Sarah Knapton is the Science Editor of The Telegraph and has covered ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Alien probes could already be hiding somewhere in our Solar System – and our current surveys are nowhere near good enough to ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...