The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

(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 has captured human imagination for centuries, but the Red Planet holds far more secrets than NASA typically shares with the public. While the space agency presents Mars as a fascinating but ...

NASA's twin ESCAPADE Mars probes are on their way to the Red Planet — but it's a circuitous route with a year-long layover.

SpaceX will launch Europe's life-hunting Rosalind Franklin rover toward Mars in 2028 — but not aboard the company's Starship megarocket. NASA plans to launch its first nuclear-powered interplanetary ...