The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

New research shows how Mars may have undone its own habitability, while Earth stayed stable enough to support life.

By discovering carbonate rocks, NASA's Mars rovers may have unlocked the key to understanding the fate of the Red Planet's climate.

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were ...

Brazilian publicist and dancer Juliana Marins died after slipping into an active volcano crater. The 26-year-old was recorded smiling and joking with a friend before her fatal fall. Heartbreaking ...

NASA studies Mars more than scientists know about our oceans. The Red Planet is the most studied celestial body, and a new ...

People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often ...

Mars isn't a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially ...

Jezero Crater, once a lake bed some 3.5 billion years ago, has become the focus of NASA’s search for signs of past life. It’s ...

On June 11, the 1,000-plus-foot lava blasts of Kīlauea, one of the world’s most active volcanoes, nearly lured one visitor to his death. A 30-year-old Boston man fell 30 feet from a steep cliff ...

Scientists have spent decades scouring the Martian surface for any signs of life. Now, a photo snapped by NASA 's Curiosity rover has sparked speculation that the hunt might be over.