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Lead hokes the age

Rocks do not lose their memory across Earth history, but their true ages might be distorted: Even under ultra-high temperature metamorphic conditions exceeding 1200°C, zircon retains the lead content accumulated ...

dateApr 06, 2015 in Earth Sciences
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The view from up there, down here

When many people saw the first stunning photos of the fragile blue marble of Earth from space, it changed their outlook of humanity. It was a singular moment in time when people around the world were watching ...

dateApr 28, 2015 in Space Exploration
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Image: Vanguard satellite, 1958

One of the Vanguard satellites is checked out at Cape Canaveral, Florida in 1958. Vanguard 1, the world's first solar-powered satellite, launched on St. Patrick's Day (March 17) 1958. It was designed to test ...

dateMar 18, 2015 in Space Exploration
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