publication 19-July-2018 19:05:53

Organic compounds on comet 67P/Churyumov-Gerasimenko revealed by COSAC mass spectrometry

Publication date: 31 July 2015

Authors: Goesmann, F., et al.

Journal: Science
Volume: 349
Issue: 6247
Year: 2015

Copyright: AAAS

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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Last Update: 06 August 2015

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