(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: ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

NASA is quietly laying the groundwork for a new generation of robots that will not just survive on Mars, but move, scout and deliver science in ways today’s rovers cannot. The Science Transport & ...