Journal
SCIENCE
Volume 349, Issue 6247, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aab0689
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Funding
- Deutsches Zentrum fur Luft- und Raumfahrt (DLR) [50 QP 1302]
- Centre National d'Etudes Spatiales (CNES) grant at LATMOS
- Centre National d'Etudes Spatiales (CNES) grant LISA
- L'Agence Nationale de la Recherche [ANR-12-IS07-0006]
- NASA Astrobiology Institute
- NASA Postdoctoral Program at Goddard Space Flight Center
- Programme de Developpement d'Experiences scientifiques through Enterprise Ireland
- Welch Foundation
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Comets harbor the most pristine material in our solar system in the form of ice, dust, silicates, and refractory organic material with some interstellar heritage. The evolved gas analyzer Cometary Sampling and Composition (COSAC) experiment aboard Rosetta's Philae lander was designed for in situ analysis of organic molecules on comet 67P/Churyumov-Gerasimenko. Twenty-five minutes after Philae's initial comet touchdown, the COSAC mass spectrometer took a spectrum in sniffing mode, which displayed a suite of 16 organic compounds, including many nitrogen-bearing species but no sulfur-bearing species, and four compounds-methyl isocyanate, acetone, propionaldehyde, and acetamide-that had not previously been reported in comets.
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