By Will Dunham WASHINGTON, March 18 (Reuters) - Using ground-penetrating radar, NASA's Perseverance rover has detected ...

Ground-penetrating radar reveals a long-lost river system hidden under the surface of Mars. (NASA/JPL/UCLA/UiO/ETH Zurich) ...

New clues found underneath Jezero Crater.

Mars was once far wetter than it appears today, and new research suggests much of that water did not disappear but migrated ...

Data from NASA's InSight mission suggests the Red Planet's Tharsis region is more active than previously thought and may be ...

Multiple spacecraft and rovers have now detected what appears to be an extensive network of ancient river channels hidden beneath the Martian surface, buried under layers of lava and sediment that ...

Using ground-penetrating radar, NASA's Perseverance rover has discovered subsurface traces of an ancient river delta on Mars.

For years, scientists have been intrigued by mysterious dark streaks running down the slopes of Martian cliffs and craters. These marks, called slope streaks and recurring slope lineae (RSLs), have ...

NASA’s twin ESCAPADE spacecraft will uncover how the Sun stripped Mars of its atmosphere. Mars is a very different world ...

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were carved by rivers, so it was once warm enough for liquid water. How—and ...