Dark streaks on Mars that have puzzled scientists since their discovery in the 1970s are not evidence of water as many ...

On May 2, as sunlight crept over the Martian horizon, the Odyssey spacecraft captured Arsia Mons, a towering, long-extinct volcano, puncturing a glowing band of greenish haze in the planet’s upper ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

NASA’s MAVEN spacecraft has observed atmospheric sputtering on Mars for the first time, confirming how solar wind stripped the Red Planet’s thick atmosphere and transformed its climate.

The Deuteronilus Cavus crater has been shaped by water, wind, ice and volcanic erosion over billions of years, showcasing ...

Living in today’s age of ambitious robotic exploration of Mars, with an eventual human mission to the red planet likely to happen one day, it is hard to imagine a time when Mars was a mysterious and ...

Is transforming Mars into a habitable planet achievable? A team of scientists is re-examining this question with recent ...

Mars, the other world, followed a different path. Today the Martian surface is hostile to life as we know it, but as this scientific story goes, Mars may have once hosted a rich abundance of microbes.