For more than a century, astronomers debated the possibility of martian canali (channels) which Italian astronomer Giovanni Schiaparelli claimed to see on the Red Planet in 1877. Mistranslated into ...

Prevailing theories suggest that Mars was once covered in a major liquid water system of oceans, rivers, and lakes, which presupposes a thick atmosphere that could maintain temperatures at which ...

Liquid water once shaped the Martian landscape dramatically, carving valleys, filling lakes, and forming vast oceans. Billions of years ago, during Mars' early days known as the Noachian and Hesperian ...

Humans haven’t set foot on Mars — yet — but we’ve already got the maps drawn up. A new map released earlier this month shows the Red Planet in all its dusty glory. The map was created with real photos ...

A new analysis of Mars’ gravitational field has revealed hidden structures buried beneath the remains of an ancient ocean. The work, which was presented this week at the Europlanetary Science Congress ...

Mars has hosted a surprising number of robotic visitors, yet the question of where humans should touch down remains wide open. As engineers refine maps of potential Mars landing sites, one location ...

Until recently, Mars was studied only through telescopes and some data that was recorded from early spacecraft. It was thought that Mars' polar regions were the only significant reservoirs of ice, ...