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Catching falling stardust

NASA’s capsule containing dust from Comet Wild 2 returned to Earth yesterday, landing in the desert salt flats of the US Air Force Utah Test and Training Range.

The capsule’s landing marks the return of NASA’s Stardust mission which has been on a three billion-mile trip to collect cometary material and interstellar dust.

Samples will be distributed to a number of specialist research teams, including four from the UK. Scientists from the Open University, the Natural History Museum, Imperial College and the University of Kent will be hoping that the material will provide a key to unlock some of the secrets of the solar system.

Stardust encountered Comet Wild 2 in January 2004 as it came within 146 miles of the comet. Stardust’s collector captured thousands of comet particles into cells filled with Aerogel.

After their capture the particles were locked away in a ‘clam shell’ capsule to protect them on their journey back to Earth.

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