Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars
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- Jennifer L. Eigenbrode
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Roger E. Summons
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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- Andrew Steele
- Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
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- Caroline Freissinet
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Maëva Millan
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Université Pierre et Marie Curie, Université Versailles Saint-Quentin and CNRS, Paris, France.
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- Rafael Navarro-González
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cuidad de México 04510, México.
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- Brad Sutter
- Jacobs Technology, Houston, TX 77058, USA.
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- Amy C. McAdam
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Heather B. Franz
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Daniel P. Glavin
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Paul D. Archer
- Jacobs Technology, Houston, TX 77058, USA.
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- Paul R. Mahaffy
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Pamela G. Conrad
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Joel A. Hurowitz
- Department of Geosciences, Stony Brook University, Stony Brook, NY 11794, USA.
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- John P. Grotzinger
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- Sanjeev Gupta
- Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.
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- Doug W. Ming
- Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Houston, TX 77058, USA.
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- Dawn Y. Sumner
- Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA.
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- Cyril Szopa
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Université Pierre et Marie Curie, Université Versailles Saint-Quentin and CNRS, Paris, France.
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- Charles Malespin
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
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- Arnaud Buch
- Laboratoire Génie des Procédés et Matériaux, Centrale Supélec, Gif-sur-Yvette, France.
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- Patrice Coll
- Laboratoire Inter-Universitaire des Systèmes Atmosphériques, Université Paris-Est Créteil, Université Paris Diderot and CNRS, Créteil, France.
説明
<jats:title>Measuring martian organics and methane</jats:title> <jats:p> The Curiosity rover has been sampling on Mars for the past 5 years (see the Perspective by ten Kate). Eigenbrode <jats:italic>et al.</jats:italic> used two instruments in the SAM (Sample Analysis at Mars) suite to catch traces of complex organics preserved in 3-billion-year-old sediments. Heating the sediments released an array of organics and volatiles reminiscent of organic-rich sedimentary rock found on Earth. Most methane on Earth is produced by biological sources, but numerous abiotic processes have been proposed to explain martian methane. Webster <jats:italic>et al.</jats:italic> report atmospheric measurements of methane covering 3 martian years and found that the background level varies with the local seasons. The seasonal variation provides an important clue for determining the origin of martian methane. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6393" page="1096" related-article-type="in-this-issue" vol="360" xlink:href="10.1126/science.aas9185">1096</jats:related-article> , p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6393" page="1093" related-article-type="in-this-issue" vol="360" xlink:href="10.1126/science.aaq0131">1093</jats:related-article> ; see also p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6393" page="1068" related-article-type="in-this-issue" vol="360" xlink:href="10.1126/science.aat2662">1068</jats:related-article> </jats:p>
収録刊行物
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- Science
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Science 360 (6393), 1096-1101, 2018-06-08
American Association for the Advancement of Science (AAAS)