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

Arnie said, "Get your ass to Mars", but is it really a good idea? We asked the experts about our Martian future.

Learn how bacteria survived a simulated asteroid impact and could travel between planets on asteroid debris.

Tiny life forms tucked into debris from an asteroid hit could catapult to other planets—including Earth—and survive, a new ...

Tests conducted with tardigrades suggest that there is something in Martian dirt that dramatically reduces biological ...

A super-tough microbe may be able to survive being blasted from Mars into space—opening the door to interplanetary life transfer.

Searching for past or present life on Mars is the sole driving force behind every mission we send to the red planet, from orbiters to landers to rovers. However, there remains a concern in the ...

Rice University biology professor Scott Solomon ponders those questions in his new book, "Becoming Martian: How Living in ...

The idea that life can spread from world to world dates as far back as ancient Greece and the philosopher Anaxagoras.

Yellowstone’s predators battle it out, one of the earliest veggie-eaters found in Nova Scotia, COVID is disappearing in animals and how genes affect our lifespan.

NASA's Curiosity rover just found bizarre nodules on giant Martian "spiderwebs." Scientists are puzzled.