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New research suggests Mars may have remained habitable much longer than scientists once thought. Ancient sand dunes in Gale Crater appear to have been soaked by underground water billions of years ago, leaving behind minerals that can preserve signs ...

Mars didn't always look like the barren world we see today. Over billions of years, the Sun's solar wind stripped away much of its atmosphere, helping transform it from a warmer, wetter planet into a frozen desert. NASA's twin-spacecraft ESCAPADE ...

NASA's Curiosity rover is investigating strange spiderweb-like ridges on Mars that may reveal a hidden chapter of the planet's watery history. These "boxwork" formations likely formed when groundwater flowed through cracks in the rock, leaving ...

Cambridge scientists have discovered a light-powered chemical reaction that lets researchers modify complex drug molecules at the final stages of development. Unlike traditional methods that rely on toxic chemicals and harsh conditions, the new ...

Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions that improve fuel mixing and lower combustion ...

Scientists have uncovered evidence that our Sun may have traveled across the Milky Way as part of a massive migration of Sun-like stars billions of years ago. The journey may have carried the solar system away from the galaxy's crowded center into a ...

Gold and other heavy elements are born in some of the universe's most violent events--but scientists still struggle to understand the nuclear steps that create them. Now, nuclear physicists have uncovered three key discoveries about how unstable ...

As AI systems began acing traditional tests, researchers realized those benchmarks were no longer tough enough. In response, nearly 1,000 experts created Humanity's Last Exam, a massive 2,500-question challenge covering highly specialized topics ...

Scientists have found a promising new way to manufacture one of industry's toughest materials--tungsten carbide-cobalt--using advanced 3D printing. Normally, producing this ultra-hard material requires high-pressure processes that waste large amounts ...

Scientists analyzing a gravitational-wave signal have discovered that a neutron star and black hole spiraled together on an oval-shaped orbit just before merging. This unusual motion, detected in the event GW200105, contradicts the long-held ...