When it comes to the space sciences, nothing is quite as exciting as the search for alien life, and NASA thinks it has a good ...

New Scans of a Martian Meteorite That Landed on Earth Strengthen ‘Alien Life’ Claims ...

Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

Humans could have come from Mars, scientists have said. A study by Johns Hopkins University has found that alien microbes ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system.

Beyond that, in the decades to come, we might be able to see the colours of an exoplanet’s surface, and determine if plant life might be present there. And then we can search for changes in a planet’s ...

Hardy bacteria in a lab survived pressures comparable to an asteroid strike on the red planet, suggesting a hypothetical scenario in which our planet was seeded with life.

Solar winds near aliens’ homes – and ours – might be blowing away signs of alien technosignatures by broadening signals The ...

If life ever existed on Mars, it might have looked like microfossils right here on Earth.

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

NASA's Curiosity rover discovered strange mineral nodules on massive spiderweb formations on Mars.