Two European Space Agency Mars-orbiting missions, the Mars Express and ExoMars Trace Gas Orbiter spacecraft, watched as a powerful solar "superstorm" that ravaged Earth also struck the Red Planet. The ...

Finding Earth-like planets orbiting sun-like stars and identifying signs of life such as oxygen or water is a major goal in ...

A new study published in The Astrophysical Journal argues that “space weather” could be distorting incoming transmissions from extraterrestrials. The paper, penned by researchers at the SETI (Search ...

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.

Earthlings aren't the only ones safe from a city-wrecking-size asteroid. Future lunar inhabitants won't have to worry about a ...