It is set to arrive in 2030 - and what it finds could change what we know about life in our solar system.

Distinct days and nights have helped life flourish on Earth. But many alien worlds capable of supporting life may not have such clear delineations.

Forget UFOs and alien abductions, here's how scientists are really looking for life on other worlds.

Researchers say they found "no evidence" that the US government had interactions with aliens.

Alien lifeforms are likely to have evolved their own unique ways of communicating, so how might humanity communicate with them if ever make contact?

Alien life could take many different forms, but one possibility is captivating scientists: alien "plants". What would they look like? And how could we find them?

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.

Alien astronomers might be looking in our direction from distant planets. What would they see?