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 ...

Could aliens have started life on Earth? New research shows life may have spread through space like an infectious virus - ending up with us here on Earth, scientists claim. The alien life forms may ...

We've long assumed that aliens will be like us, but there's every reason to think they are instead a form of unfathomable AI, says the UK astronomer royal Lord Martin Rees. It's taken more than four ...

They are often depicted as either little green men, bug-eyed creatures or terrifying monsters intent on wiping out all life on Earth. But if aliens do exist, what might they actually look like?

An extraterrestrial alien civilisation could likely intercept transmissions from Earth within the next 100 years, a new study has revealed. The likelihood of transmissions from Nasa’s Deep Space ...

Advanced alien civilisations could discover human life on Earth by picking up technosignatures given off inadvertently by civilian and military radar, new research shows. Airport radar can be picked ...

EXPERTS are saying that the searches for extraterrestrial life are looking at the wrong signs. When scientists engage in these searches, they often assume that biological life on other planets ...

Alien life may one day be found not from radio signals beamed across the cosmos but from an all-too-familiar side-effect of civilisation: pollution. It's the Earth's atmosphere that he's usually ...

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A team of scientists want to start a new mission to try to find life beyond Earth and the solar system. Astronomers from ETH Zurich, a Swiss university, want to send four space telescopes to explore ...