The surface of Mars is extremely cold, irradiated, and desiccated. But at one time, the planet was much warmer and wetter, ...

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

In those drill sites, Curiosity detected deposits containing an iron carbonate material called siderite. According to Ben ...

A crater on Mars has a bright patch of ice. It's the second time in over a decade that the crater and ice has been observed ...

Mars may have experienced rainfall and river flow billions of years ago, reshaping the Red Planet's surface and supporting a ...

Mars may once have had a relatively warm and wet climate conducive to flowing water, rain and snow, producing a terrain much ...

While it may seem like another dusty region of Mars, fresh data from a deep-penetrating radar system tells a very different story. This giant deposit might be hiding a frozen ocean under layers of ...

Some researchers say that ancient Mars wasn't ever warm and wet, but always cold and dry. At the time, the solar system's young sun was only about 75% as bright as it is today. Sprawling ice caps ...

The Perseverance rover has found some intriguing samples on the red planet. Here's what they might reveal about the origins ...

A scientific analysis of samples collected on the surface of Mars shows the red planet has evolved its own version of a carbon cycle. The cycle has helped to create life on Earth, but why not on Mars?