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Ancient rainstorms may have sculpted the red planet, similar to the monsoon rains that helped shape the Southwest’s landscape

NASA's six-wheeled rover landed on the red planet in January 2004 for what was billed as a 90-day mission. The plucky robot was still going until a dust storm on Mars last summer killed it.

Space scientists on Earth have improvised a tool on the Mars rover to help them figure out how a giant mountain on the Red Planet came to be. Their surprising conclusion: It's likely windswept sand.

Mars, Earth and the sun have lined up, a celestial orientation known as opposition. This particular opposition occurs at a time when the orbit of Mars takes it closest to the sun.

Mars used to be much warmer and wetter than it is today. Scientists are unraveling the mystery of why it dried out.

Four billion years ago, Mars may have looked completely different. Water could have flowed across the planet's surface. There might have been life. To…

A University of Colorado Boulder led mission to Mars blasts off Monday morning. It’s the first time CU Boulder has led such a mission.The mission is being…

In a paper released in the journal Science, researchers explain that if the Red Planet is harboring life, the instruments on the rover have been unable to sniff it out.

Mars had more of the key minerals needed to get life going, a researcher says. He theorizes that some of the rocks that have traveled from the Red Planet to Earth had those elements and gave life here a kick start.

It's not the hard work that will make astronauts lose it on long planetary missions — it's boredom. And something that can become very boring very fast is a rote menu. A simulated Mars mission reveals why cooking for others will be vital on long space journeys, and why wraps rule.