We've all grown up dreaming of aliens landing on the Earth or laser beaming across the sky; well, either way, it's sci-fi and ...

Scientists suggest the first alien signal we detect could be a desperate cry for help from a fading civilization.

Harvard scientist Avi Loeb claims the interstellar object 3I/ATLAS may be alien technology sent to seed life on Earth, sparking a debate with sceptics who insist it is merely a comet.

The first signals from extraterrestrial civilisations, according to David Kipping's Eschatian Hypothesis, are likely to be ...

In this scenario, our first contact with aliens would be tragic. We should look for "loud shouts in the night".

Historically, many scientists and society have been fascinated by the prospect of making contact with extraterrestrial ...

The simulation hypothesis — the idea that our universe might be an artificial construct running on some advanced alien ...

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, yet a growing group of researchers warns that such a moment might arrive not ...

Today marks a celestial moment of truth. As the interstellar comet 3I/ATLAS reaches its closest point to the Sun, a controversial theory faces its final test: is it just a comet, or an alien ...