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

Mars is a planet with so much more to discover. Research has been done on the planet to test its sustainability for life, and more continues today.

CNN Editorial Research (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. Facts There have ...

CNN Editorial Research (CNN) — Here’s some background information about Mars exploration. The United States, Soviet Union and China are the only ...

Two samples from Mars together deliver the "smoking gun" in a new study showing the origin of Martian organic material. The study presents solid evidence for a prediction made over a ...

Here's some background information about Mars exploration. The United States and the Soviet Union are the only two countries to land a spacecraft on Mars.

(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.

(CNN) — Here’s some background information about Mars exploration. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars. There have been nine ...

CNN Editorial Research (CNN) — Here’s some background information about Mars exploration. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars ...

Facts There have been nine successful US Mars landings: Viking 1 and Viking 2 (both 1976), Pathfinder (1997), Spirit and Opportunity (both 2004), Phoenix (2008), Curiosity (2012), InSight (2018 ...

CNN Editorial Research (CNN) — Here’s some background information about Mars exploration. The United States and the Soviet Union are the only two countries to land a spacecraft on Mars. Facts ...