Solar System

Dark Streaks on Mars Revisited

New research on seasonal streaks in Martian canyons provides evidence against underground pools of water.

Hale Crater's dark streaks

Solar System

Waterlogged Salts on Mars

Scientists have confirmed that water-soaked salts likely create dark seasonal lines on Mars.

Solar System

Best Evidence Yet for Martian Water

NASA's Mars Reconnaissance Orbiter has found perplexing dark streaks that form seasonally and strongly suggest that liquid water flows on the Martian surface.

Space Missions

Is Water Flowing on Mars?

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.