Fluid-rock interactions on ancient Mars may have produced abundant magnetic minerals that preserved unusually intense records ...

We've always known Mars as the Red Planet - but it turns out, we may have had the reason why wrong. If so, it could revise ...

If Mars ever hosted microorganisms in its bygone oceans, their fossils might still be preserved in minerals—and now, we have ...

Sometimes scientists must dig and work and sweat to make scientific discoveries. And sometimes a robot rolls over a rock that ...

The findings reveal details about conditions on Mars when the planet last contained large volumes of liquid water more than 3 billion years ago. “Early Mars has historically been thought of as ...

A new study in the journal Nature Communications reveals that Mars is red for very much the same reason it may have once been home to life — namely, that it was a wet planet. This is in line with ...

Mars’s signature red hue may not be due to hematite, as previously believed, but rather to ferrihydrite — an iron oxide that requires water to form. Using a combination of spacecraft data and ...

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity — or not.

Vincent Chevrier, associate research professor at the University of Arkansas Center for Space and Planetary Sciences, is part ...

Ferrihydrite typically forms quickly in the presence of cool water and so must have formed early on ancient Mars when the planet was still wet. "We are not the first to consider ferrihydrite as ...

A spectacle for stargazers to admire will take place in the night sky this evening, March 8. Mars will have a close encounter ...