As the sun grew hotter, so did Mars, prompting much of its atmospheric carbon dioxide to rain out and ultimately get locked ...

What can the climate history of Mars teach scientists about whether the Red Planet once had the ingredients for life as we ...

Researchers have successfully grown green algae in a specialized bioplastic “shelter” designed to mimic Mars. The Harvard ...

"Returning the scientifically selected samples that await us on Mars, as part of a balanced portfolio, will help to ensure ...

Of all the planets visible from Earth, Mars has always felt different. Its soft red glow has caught the eye of sky-watchers ...

The new images by the Curiosity rover on Mars show "dramatic evidence" of ancient groundwater in crisscrossing low ridges, ...

On the eve of the 249th anniversary of American independence, NASA on Tuesday showcased a patriotic image of Old Glory as ...

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts ...

Meteorite NWA 16788 is the largest known piece of Mars on Earth, weighing 54 pounds (24.67 kg). Discovered on November 16, ...

The images and data being collected are already raising new questions about how the Martian surface was changing billions of ...

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often ...