Annapurna IV toppled in a Himalayan landslide, and scientists finally figured out when and how it happened.
unsolved mysteries
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Magnetic Tangles Drive Solar Wind
Energetic collisions between magnetic fields produce gusty solar wind.
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The Mysterious Case of Ireland’s Missing Earthquakes
The Emerald Isle has far fewer earthquakes than neighboring Britain. Now scientists think they know why.
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Saturn’s Shiny Rings May Be Pretty Young
The rings are fairly shiny despite being bombarded by dust, indicating that they haven’t been around for very long.
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Supersized Potholes Discovered off South African Coast
Curious circular pits off South Africa’s Eastern Cape coast are larger than any similar feature previously recorded. Their origin remains a morphological mystery.
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Ancient Victims of Vesuvius May Have Baked in a Cloud of Ash
Debate still swirls around what killed ancient Romans during the 79 CE eruption. A study of wood charred by the event suggests a brief, but searing, flow of volcanic gas and debris.
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Tiny Martian Moon May Be a Chip Off the Old Block
A close approach to Deimos reveals that its surface does not look like that of an asteroid, hinting at a Martian origin.
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A Mission to Uranus Could Help Find Planet 9
Narrowing down the search is essential for gaining time on a high-powered telescope that could spot the hypothesized planet directly.
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Hunting for Methane Hot Spots at the Top of the World
A visit to an Alaskan wetland with some of the world’s highest lake marsh methane emissions brings scientists one step closer to understanding the phenomenon.
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Molten Meteorites Didn’t Deliver Earth’s Water
A new study has ruled out large, once-molten meteorites called achondrites as sources of Earth’s water.