NASA’s Curiosity rover has photographed a bizarre, coral-shaped rock on Mars, believed to have formed billions of years ago.

Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more familiar. New mapping of ancient river systems indicates that a vast ...

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

What can Mars’ red hue that’s been observed for thousands of years teach us about when water existed on its surface potentially millions, or even billions, of years ago? This is what a recent study ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of Mars as a dry and arid world. But it wasn't always this way. Where did the red ...

New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface water in a Martian crater that once held a vast lake—considerably expanding ...

NASA’s Curiosity rover captured a coral-shaped rock on Mars. Though not alive, its shape reveals clues about the planet’s geology. Small discoveries like this help scientists decode Mars’ ancient past ...

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too cold.

For our science news roundup from Short Wave, NPR's science podcast, I'm joined by Emily Kwong and Jessica Yung. Hey there. EMILY KWONG, BYLINE: Hi, Ari. JESSICA YUNG, BYLINE: Hi. SHAPIRO: All right, ...

(CNN) — A mineral trapped within a Martian meteorite that fell to Earth has revealed traces of water on Mars that date back 4.45 billion years, according to new research. The zircon grain may contain ...

Frigid water helped paint Mars red and may have shaped a vast coastline, two new studies into the planet’s history reveal. Scientists have detected a possible ancient beach in Mars’ northern ...

"We think the water came from the melting of nearby sub-surface ice called permafrost, and that the permafrost melting was caused by magmatic activity that still occurs periodically on Mars to the ...