CNN — (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 ...

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Humans have long imagined life on Mars, though our understanding of the planet has changed a lot. Some of the US's earliest plans assumed humans could reach the Red Planet by the 1980s. Over the ...

The Perseverance rover has found some intriguing samples on the red planet. Here's what they might reveal about the origins of life in our universe—if we can get them back to Earth. Clouds of water ...

Did you know that Mars at opposition is a special time when Earth and Mars are closest? This happens when Earth passes ...

NASA revealed that new data showed MAVEN was rotating in an unexpected way after it emerged from the far side of Mars ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it’s telling us something about what the planet’s ...