Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: ...

NASA’s Mars Reconnaissance Orbiter has learned to pull off daring 120-degree rolls that give its SHARAD radar ...

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

The spacecraft now almost tips upside down relative to Mars to give its radar the best view. The Mars Reconnaissance Orbiter ...

For years, scientists have been looking for signs of liquid water just beneath the surface of Mars. New research recently published in Nature Communications may have dried up one of the most ...

NASA's Mariner 4 captured the first-ever close-up image of Mars on July 14, 1965. While waiting for the data to be processed ...

Looks like Mars might have had more water than anyone previously imagined.

In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that ...