Mars

Periodic melting of ice sheets on a cold early Mars would have created enough water to carve the ancient valleys and lakebeds seen on the planet today.

NASA is developing technologies and countermeasures to ensure a safe and successful journey to the red planet.

Scientists taking a new look at older data from NASA's longest-operating Mars orbiter have discovered evidence of significant hydration near the Martian equator.

3-D subsurface radar volumes are revealing new information about the polar regions of Mars.

A new paper suggests that the element vanadium in combination with Raman spectroscopy on organic material could serve as potential biosignatures on Mars.

A region of Mars named Aeolis Dorsa contains some of the most spectacular and densely packed river deposits seen on Mars.

The Gale Crater site once flowed with rivers ending in a lake.

NASA scientists have found evidence that Mars' crust is not as dense as previously thought, a clue that could help researchers better understand the Red Planet's interior structure and evolution.

Preparation of NASA's next spacecraft to Mars, InSight, has ramped up this summer, on course for launch next May as the first interplanetary launch from California.

NASA's Mars 2020 mission, which will look for signs of past life on Mars, will use smart methods originally developed to find the oldest life on Earth.