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Scientists say Rosetta's comet stinks -- literally
Scientists say Rosetta's comet stinks -- literally

It turns out that the comet the Rosetta mission has been chasing for the last decade is a stinker. Literally. Researchers from the University of Bern in Switzerland say that if you could take a whiff of the cloud of gas surrounding the icy nucleus of comet 67P/Churyumov-Gerasimenko you would smell a pungent mix of hydrogen sulfide (rotten eggs); ammonia (horse stable); and formaldehyde. There would also be a hint of vinegar (sulfur dioxide) and a whiff of alcohol (methanol). Carbon disulfide would add just a touch of sweetness, the scientists say. In all -- eau du Churyumov-Gerasimenko would be pretty unpleasant. The research team used the two mass spectrometers in Rosetta's...

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