Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth could thus be overlooking prime evidence of alien intelligence.

Scientists may have just taken one of the biggest steps yet in the search for life beyond Earth. Meet K2 18 b, a distant ...

Astronomers have sharply revised down the mass of nearby super Earth GJ 3378b, dramatically improving its prospects as a ...

Earth may be the only planet in the universe that we know to support life. However, astronomers have identified several alien exoplanets that could have even better environments, making them ...

Astronomers in a recent breakthrough have identified 45 new rocky exoplanets that could harbour and support alien life. The researchers also mentioned a more "restrictive" list of 24 planets that meet ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest signs yet of possible life beyond our solar system, detecting in an alien ...

Add Yahoo as a preferred source to see more of our stories on Google. Humanity may be one step closer to finally answering the question of whether we're alone in the cosmos with a definitive "no." A ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of expertS ...