'Extraterrestrial' fragments recovered from the Pacific Ocean floor could have come from an alien planet outside our solar system, an astronomer has claimed. Planetary scientist Humberto Campins said ...

One of them is about 4.2 light years away - more than a whopping 24 trillion miles from Earth! Find out more here.

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 ...

Scientists are looking for evidence of alien technology in a faraway solar system with the most perfect mathematical alignment and synchrony of planets ever seen. The solar system, about 100 light ...

'Oumuamua was the first known interstellar object to visit our solar system – but not the last. (Getty) The cigar-shaped space rock `Oumuamua was the first known interstellar object to visit our solar ...

A new UK-built spacecraft hopes to unravel the secrets of the mysterious planet when it blasts off later this month MERCURY, the tiny planet closest to the sun, has long remained a mystery. But it’s ...

Life could have arrived on Earth in ancient collisions with rocks from other solar systems (Image: Hubble/Princeton) Life could have arrived on Earth in rocks from other solar systems, scientists ...

Other solar systems could have large numbers of planets that are home to alien life, a new study has found. The research suggests that other parts of the universe could be host to numerous planets ...

Asteroid experts at São Paulo State University's Institute of Geosciences and Exact Sciences have identified 19 space rocks of interstellar origin. The space rocks are classed as Centaurs - ...