Why is Mars known as the Red Planet? The answer lies in its striking reddish glow, visible even from Earth. The surface of Mars is covered with iron oxide - commonly known as rust - which gives it a ...

(CNN) — Here’s a look at the exploration of Mars. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars. There have been nine successful US Mars landings: ...

This handout image taken by NASA's Mars rover Curiosity shows rippled patterns on the surface of rocks caused by the waves of a shallow lake billions of years ago ...