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Riding high in the Atacama

The Atacama Large Millimeter Array will provide radio astronomers an unprecedented combination of sensitivity and resolution.
Currently taking shape on the Chajnantor plain in the Chilean Andes, the Atacama Large Millimeter Array (ALMA) promises to revolutionize the search for molecules in the universe — and so much more. When completed in 2012, the observatory will house up to 64 antennae, each 39 feet (12m) in diameter and weighing 115 tons.

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