Using nano-scale geochemistry, researchers found evidence of hot water on Mars 4.45 billion years ago. On Earth, similar systems played a crucial role in the development of life and early crust ...

In those drill sites, Curiosity detected deposits containing an iron carbonate material called siderite. According to Ben ...

But in the ancient past—up until about 4.12 to 4.14 billion years ago—Mars seems to have had an inner dynamo powering a planet-wide magnetic field. What shut down the Martian dynamo?

To study Mars’s chemical and mineral makeup, the Curiosity rover drills one to 1.5 inches down into the subsurface, then ...

In a new paper published in Nature today, colleagues and I reveal secrets of Earth’s crust 4.5 billion years ago. In the process ... similar to the one on Mars. Others say it may have been ...

There’s evidence for life on Earth going back as far as 4 billion years ago. So, what are the odds that Mars had life back then, too? That’s the question. Ancient Mars meets the environmental ...

The findings are the latest evidence indicating the existence of this hypothesized ocean, called Deuteronilus, roughly 3.5 to 4 billion years ago, a time when Mars possessed a thicker atmosphere ...