The Essential Guide to Astronomy
New research on seasonal streaks in Martian canyons provides evidence against underground pools of water.
By: Ana V. Aceves
July 22, 2016
Scientists have confirmed that water-soaked salts likely create dark seasonal lines on Mars.
By: Camille M. Carlisle
September 28, 2015
NASA's Mars Reconnaissance Orbiter has found perplexing dark streaks that form seasonally and strongly suggest that liquid water flows on the Martian surface.
By: Raphael Rosen
August 4, 2011
Spacecraft and Space Missions
Spacecraft images are keeping an eye on little surface flows on Mars that show up in midsummer, then fade over time. It's the strongest suggestion yet that the Red Planet can get wet.
By: J. Kelly Beatty
March 11, 2011