New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

Ancient shoreline features hint that water on Mars once formed a vast ocean.

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

Mars has an active, electrically charged surface where dust storms and spinning dust devils regularly move and reshape the ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

Perseverance rover found a rock on Mars named Phippsaksla with so much iron and nickel that it could be a meteorite.

A new study has examined how future human missions to Mars could access one of the planet's most vital resources—water. The ...

For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...