Mars, the fourth planet from the sun, is a dry, rocky world. Its famous red color has earned it the nickname the Red Planet. Mars has fascinated people throughout history, and today, it is one of ...

Landscapes like this are changing the way geologists look at Mars. They've long been fascinated by the planet's distant past. Now they're getting ever more excited by the mysterious processes ...

In November 1996 when Surveyor was launched, there had been no completely successful mission to Mars in 20 years. Its goal was to assemble a global portrait of the planet over a full Martian year ...

Mars is widely known for its iconic rusty red color — many people even refer to it as just the "Red Planet" — but new ...

On a flyby of Mars, the European Space Agency (ESA) captured a rare photo of its second moon - but what do we know about it? It's called Deimos, and is much smaller and more mysterious than Phobos ...