Scientists are tracking a large gas planet experiencing quite a quandary as it orbits extremely close to a young star - a ...

If aliens visit Earth, at least in the medium term, they will almost certainly be far more advanced than us, having solved the problem of interstellar space travel well before we have.

NASA's James Webb Space Telescope (JWST) provided the first direct image of a planet with a mass similar to Saturn's, ...

An alien planet has been discovered that may be "teeming with life" as scientists reveal the exact date we will know whether extraterrestrials exist could be "within one to two years". Lead ...

A theoretical planet-free alien colony would have to overcome many challenges, including a lack of resources, exposure to cosmic radiation and the vacuum of space, and access to enough sunlight.

It would take 120 years to travel to planet K2-18b at the speed of light. Here's how we know what could lie there.

Aliens might be able to detect us from the radio signals we beam to Mars to control our rovers there. Astronomers have now listened in on the nearby TRAPPIST-1 system to check whether aliens are ...

You may take sleep for granted, but research suggests many planets that could evolve life don't have a day and night cycle. It's hard to imagine, but there are organisms living in Earth's lightless ...

We don’t yet know if any of them actually do have water, much less life. Still, that comes to 28.7 billion planets in the Goldilocks zones of M-dwarfs alone. This is not even considering other types ...