Scientists say bad space weather may be one reason alien tech signals have not reached our telescopes in a usable form, after ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. If Earth’s ...

In space, no one can hear you scream. The movie theater is a different story. The spine-chilling sci-fi horror franchise “Alien” returns this week with “Alien: Romulus,” featuring a new crew of young, ...

This year, the US Congress has heard testimonies from "UFO witnesses", suggesting there is more evidence than ever of attempts by alien intelligence to make contact with Earth. But what have been the ...

The questions of whether we are alone in the universe is one at the heart of sci-fi. The question of who we are if we are not solely God’s creatures... does that mean there’s no God? Only lonely ...

In fact, polls in Australia, the US and elsewhere indicate around a third of the public believes aliens are here. However, ...