Latest Mariner 9 Stories
When the Mars Atmosphere and Volatile Evolution, or MAVEN, spacecraft arrived at the Red Planet on Sept. 21, it marked the continuation of exploration of one of Earth’s nearest celestial neighbors that began 50 years ago.
Scientists say that after the Phoenix spacecraft discovered water on Mars in 2008, it is time the search is put on again for signs of life.
The U.S. space agency says its Mars Reconnaissance Orbiter has found evidence that liquid water remained on Mars far longer than previously theorized. The National Aeronautics and Space Administration spacecraft has observed hydrated silica, or opal, spread across large regions of Mars.
How does an arid and bone-dry landscape form the largest canyon in the solar system? The question on Mars maps to the Valles Marineris, a crack in the planet so large as to dwarf the Grand Canyon and a primary imaging target for the Mars Express spacecraft.