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

The latest evidence that Mars was once a warmer, wetter world comes from a surprising place—the hidden subsurface depths of ...

Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a discussion of advanced Martian ...

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

A rugged Martian landscape that resembles a vast spiderweb when seen from orbit is offering new insights into the planet’s ...

NASA photos appear to show a pyramid-like structure the same size as Giza on Mars, prompting speculation about whether an ...

NASA’s Curiosity rover uncovered a remarkable surprise on Mars that could reshape our understanding of the planet’s ...

Mars didn’t always look like the barren world we see today. Over billions of years, the Sun’s solar wind stripped away much of its atmosphere, helping transform it from a warmer, wetter planet into a ...

Mars used to have a warmer and wetter climate, which changed after billions of years because the Sun's solar wind removed ...

NASA’s Curiosity rover is investigating strange spiderweb-like ridges on Mars that may reveal a hidden chapter of the planet’s watery history. These “boxwork” formations likely formed when groundwater ...

For nearly a month, NASA has been scrambling to make contact with a spacecraft in orbit around Mars that abruptly fell silent. The space agency lost communication with the MAVEN probe (short for Mars ...