In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Jupiter's moon Europa is on the short list of places in our solar system seen as promising in the search for life beyond ...

A recent photo from NASA's Curiosity rover gives an idea of what Mars would look like under skies that resemble our own on ...

A new study reveals that tiny fragments of Earth's atmosphere are transported to and absorbed by the moon via gusts of solar ...

Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

New method reveals chemical signs of early microbial life in ancient Earth rocks, showing photosynthesis evolved much earlier ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests ...

New research suggests that amino acids, the fundamental components of life, may have arrived on Earth carried by interstellar ...

In an investigation to find out what sparked life on Earth, researchers have discovered that RNA formed through surprisingly ...

Asteroids, solar flares, and nearby supernovae pose real risks that could disrupt technology, economies, and life on Earth.

Scientists are using powerful telescopes to study exoplanet atmospheres for signs of life. New missions could soon reveal ...