Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

Astronomer Jon Willis warns that alien signals could be passing Earth unnoticed because humans are searching on the wrong ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Aliens could, in theory, reach Earth but would never truly go home again, according to physicists who say Einstein's laws of ...

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. This voice experience is generated by AI. Learn ...

"Although ETIs might be rare, there is only one way to really find out, and that is by searching for it." When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Want to be a top notch candidate for hosting alien life? Then there's a few key requirements you should be aware of: Ideally, you're a large object like a moon or a planet; scientists suspect you also ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...