If I were on Mars, how often would I see Earth transit the Sun? Steven RiserConyers, Georgia From Mars, Earth transits the ...

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

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

If any organism could survive getting catapulted off the surface of Mars and drifting through interplanetary space, this would be the one. The question was whether it could handle the initial violence ...

A new study shows how simulated Mars dust affects tardigrades, offering insight into space farming and contamination risks.

What turns an oddly patterned Martian rock into one of the most watched clues in planetary science? For NASA’s Perseverance ...

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

A remarkably hardy bacterium can survive pressures similar to those generated when asteroid impacts blast debris off Mars, a ...

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

On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab. Everything is wired together so well that you rarely think about the ...

Scientists compare volcanic cones on Earth and Mars to explain how gas-rich magma forms scoria cones. Spacecraft observations and Earth analog sites provide evidence of similar eruptive processes.

Spiderweb-shaped rock patterns on Mars may rewrite the timeline of when water disappeared from the Red Planet.