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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Data from a retired ...

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 ...

Martian mudstones contain features that NASA says are the "clearest sign of life" yet on Mars, according to new findings from NASA’s Perseverance rover released Sept. 10. Specifically, the stones show ...

This story was updated to correct inaccurate position of Mars and Earth. Mars will appear its biggest and brightest this month when it reaches its closest position to Earth while simultaneously being ...

Mars just threw us another curveball. NASA’s Perseverance rover recently uncovered a surprising rock formation. On the lower slopes of Witch Hazel Hill, inside the Jezero Crater, it spotted a strange ...

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

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 ...

James Day receives funding from NASA. Of the more than 74,000 known meteorites – rocks that fall to Earth from asteroids or planets colliding together – only 385 or so stones came from the planet Mars ...