Rosetta Can "Smell" a Comet - Universe Today
One experiment on board the European Space Agency's Rosetta spacecraft will let it cook particles from a comet in a miniature oven, and then "smell" the results. When Rosetta arrives at Comet 67P/Churyumov-Gerasimenko, it will send down a small spacecraft to actually land on its surface. This lander will be able to scoop up and drill samples from the comet's surface and then place them in an Evolved Gas Analyser. This tiny oven can heat the particles to 800 degrees Celsius which converts them into gas which can then be analyzed to understand what chemicals are present.
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