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

The ESA's Mars Express and ExoMars Trace Gas Orbiter spacecraft watched as a superstorm that ravaged Earth also struck the ...

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

New Scans of a Martian Meteorite That Landed on Earth Strengthen ‘Alien Life’ Claims ...

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

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

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 ...

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

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

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.