Seen from orbit, Mars’ Grand Canyon becomes a massive geological puzzle carved by time, wind, and water. Scientists can trace its history like reading a planetary archive.This video reveals how each ...

See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: ...

Mars has its own version of the Grand Canyon, and scientists have learned this dramatic feature is home to "significant amounts of water" after a discovery made by an orbiter circling the red planet, ...