The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

Harvard physicist Avi Loeb challenges NASA, suggesting the iron-rich composition of interstellar object 3I/ATLAS indicates ...

A viral tweet claims new XRISM images show interstellar comet 3I/ATLAS glowing like a spaceship engine, fuelling speculation that it may be an alien probe. Here is the truth behind the theory and what ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

Mission to investigate whether tiny organisms live in ocean volcanoes on icy Enceladus planned by European Space Agency ...

Discover the secrets of 3I/ATLAS, the 7.6 billion-year-old interstellar comet passing Earth. Learn about its ancient origins ...

An alien flying in from space aboard a comet would look down on Earth and see that there is this highly influential and ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The faraway moon has 'a slushy high-pressure ice layer' similar to the melting Arctic that could hide extraterrestrial life.

While alien hunting is often associated with tinfoil hats and flying saucers, the Search for Extraterrestrial Intelligence ...

How do you study the invisible?” This was the challenge the scientists at the ESA faced during the early days of December ...

Ask any sci-fi fan to list the top space sci-fi shows of all time, and that list will almost always include shows like Star ...