University of Washington researchers have published a 5-billion-year computational simulation of Earth without life, ...

Searching for alien signals sounds like a question of which star to aim a telescope at. It’s also a question of when to listen, because a civilization sending a focused radio beam toward Earth might ...

A new model simulates a rocky planet without life, giving astronomers a baseline to judge whether gases in an exoplanet's ...

What can a lifeless Earth teach scientists about finding life beyond Earth? This is what a recent study published in The ...

Astronomers have catalogued more than 6,000 planets beyond our solar system. None has settled the question that matters: is ...

Everyone has probably looked up at the night sky and wondered, 'Is there someone out there somewhere in this universe?' It's ...

What would our atmosphere look like if there were no life on Earth?

Astronomers have detected radio waves coming directly from an exoplanet for the first time. The signal came from Beta Pictoris b, a giant world about 63 light-years from Earth. But it is not an alien ...

Researchers are particularly interested in planets orbiting orange K-dwarf stars, which could support life for billions of ...

The object known as 3I/ATLAS (previously known as A11pl3Z), as per scientists, may be an alien technology that could potentially launch a surprise attack on our planet.