They look like twins. But under the hood, the rover currently exploring the Red Planet and the one launching there this summer have distinct science tools and roles to play.

A new study identifies frozen water just below the Martian surface, where astronauts could easily dig it up.

The twin spacecraft, the first of their kind to fly into deep space, earn a Laureate from Aviation Week & Space Technology.

A Mars Dust Tower Stands Out Dust storms are common on Mars. But every decade or so, something unpredictable happens: a series of runaway storms break out, covering the entire planet in a dusty haze.

NASA and the Department of Energy have completed a more detailed risk analysis for the Mars 2020 rover launch from Florida.

The search for evidence of life on Mars could be helped by fresh insights into ancient rocks on Earth.

There's new hope that we aren't alone in the universe, that advanced beings may exist on exoplanets. But they're probably not close by, says a new study on the stability of planetary tilts -- and orbits -- needed to encourage the evolution of complex life.

For the first time in the history of space exploration, scientists have measured the seasonal changes in the gases that fill the air directly above the surface of Gale Crater on Mars.

Giant ridges on the surface of landslides on Mars could have formed without ice, challenging their use by some as unequivocal evidence of past ice on the red planet, finds a new study using state-of-the-art satellite data.

Mars once had salt lakes that are similar to those on Earth and has gone through wet and dry periods.

Some of the Earth's building material was stardust from red giants, researchers from ETH Zurich have established. They have also explained why the Earth contains more of this stardust than the asteroids or the planet Mars, which are farther from the sun.

Space travelers sleeping in hibernation chambers before continuing with their missions, whether to go on a trip to Jupiter or hunt down an extraterrestrial creature. The concept was first imagined in the 20th century before making its way to the big screen. Are these images getting hauntingly prophetic?

A special committee of California lawmakers gathered Tuesday, for the first time in five years, to discuss sea level rise and what the state needs to do to better prepare coastal communities from devastating loss.

It will be one of the most daunting, complicated and, potentially, scientifically rewarding missions ever undertaken to the red planet. Ministers at a recent meeting of the European Space Agency (ESA) have fully committed to plans to collect samples from the surface of Mars and return them to Earth, in a joint effort with NASA. Official approval for the NASA budget to cover this mission is anticipated early next year.

As NASA's Curiosity rover makes its way over the surface of Mars, it's sometimes accompanied by clouds drifting by in the sky above. Like Earth, the Red Planet has a water cycle, with water molecules moving between the surface and the air, traveling through the atmosphere and coming together to form clouds. The behavior of water-ice clouds on Mars plays a big role in its climate, and this computer simulation shows them forming and dispersing over the course of a Martian day.