NASA’s Perseverance rover collected a rock sample in July 2024 that contained striking light-and-dark markings scientists now ...

Scientists think ancient Mars was quite different than it is today. While we might know it now as a barred, reddish wasteland ...

Streams are abruptly acidifying and turning orange or milky-white across vast regions of North America’s northwest. This is ...

The shimmering "waves" aren't metal at all, however. They are dark sand dunes dusted with seasonal frost, much of it carbon ...

Flying a helicopter on Earth is difficult enough. Flying one on Mars—where the atmosphere is less than 1% as dense—is something many engineers thought would be impossible. NASA expected Ingenuity to ...

Hillslopes in Arctic regions with frozen soils can host a suite of geometric patterns, from circles and stripes to polygonal ...

Tractors half-swallowed by sinkholes, fields so wet they can’t be planted and forests full of leaning trees are sights at farms around Fairbanks atop thawing permafrost. While permafrost is a familiar ...

Scientists found that thawing permafrost can trigger increased rock weathering, a natural process that absorbs CO2 from the atmosphere. In some regions, this carbon uptake was strong enough to fully ...

Permafrost, or frozen soil, covers some 15 percent of land in the Northern Hemisphere, and thanks to human-driven climate change, it is fueling a vicious warming feedback loop. As rising global ...

Landing humans on Mars could teach us whether life ever existed beyond Earth, how planets change over time, and how humans can live on other worlds. By studying Mars up close, astronauts could answer ...

Permafrost is frozen ground - a mixture of soil, rock, sand, and ice - that remains at or below 0°C for at least two consecutive years. Permafrost covers about a quarter of the landmass in the ...

Researchers found geological features that suggest a massive ocean once covered a third of the planet. NASA's Curiosity rover discovered seven organic molecules never before seen on Mars. These ...