Dark “slope streaks,” likely resulting from dust avalanches, stretch across an area of Mars called Acheron Fossae in this ...

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 ...

Every year the robots and satellites scientists have sent to Mars make discoveries that help us learn more about the Red ...

Europe's Trace Gas Orbiter around Mars identified strange signatures of carbon dioxide and ozone where scientists usually look for methane.

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

Mars has liquid guts and strange insides, InSight suggests Wobbles in its rotation are difficult to explain without a liquid core.

The Mars rover found geological formations in Gale Crater showing how water percolated beneath the surface, and mineral-filled cracks offer new clues about Mars' ancient climate.

In 2016, astronomers spotted an asteroid about the size of a ferris wheel in an Earth-like orbit around the Sun. Turns out it's actually a chunk of the moon.

An orbiter captured signs of clustered dark dots on Mars' Inca City that resemble spiders, which formed due to seasonal eruptions of carbon dioxide gas.

Mars' orbit has impacts on the cycle of the Earth's deep-sea currents. ISTOCK / GETTY IMAGES PLUS The orbit of Mars is thought to interact with that of the Earth, slowly changing the shape of our ...

A new study using high-resolution images from NASA's Mars Reconnaissance Orbiter (MRO) has revealed striking surface patterns on Mars that resemble the effects of paint dripping down a wall—a ...