Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

A strange pyramid-shaped formation on Mars has fueled speculation that an advanced, Earth-like civilization may have once ...

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

Research scientists are saying that recycled human waste could help grow crops on the Moon and Mars, representing a ...

NASA’s Curiosity rover is investigating strange spiderweb-like ridges on Mars that may reveal a hidden chapter of the planet’s watery history. These “boxwork” formations likely formed when groundwater ...

On March 10, 2000, Disney's big-budget sci-fi film Mission to Mars premiered in theaters, with the movie studio hoping for a super successful blockbuster. Unfortunately, the movie ...

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

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

You’ve probably followed the Mars rover missions on and off for years, watching those red-dust landscapes scroll across your TV screen and wondering: Could something have lived there once? Now, after ...

For more than a decade, NASA’s Curiosity rover has been climbing a Martian mountain, reading the planet’s ancient history layer by layer. Now, a discovery of web-like rock for ...

NASA’s Mars Curiosity rover has been exploring a curious geological formation made up of ridges up to six feet in height for the last six months. Scientists theorize that the “boxwork” formations were ...