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Xenon isotopes in 67P/Churyumov-Gerasimenko show that comets contributed to Earth's atmosphere.
Marty, B; Altwegg, K; Balsiger, H; Bar-Nun, A; Bekaert, D V; Berthelier, J-J; Bieler, A; Briois, C; Calmonte, U; Combi, M; De Keyser, J; Fiethe, B; Fuselier, S A; Gasc, S; Gombosi, T I; Hansen, K C; Hässig, M; Jäckel, A; Kopp, E; Korth, A; Le Roy, L; Mall, U; Mousis, O; Owen, T; Rème, H; Rubin, M; Sémon, T; Tzou, C-Y; Waite, J H; Wurz, P.
Affiliation
  • Marty B; Centre de Recherches Pétrographiques et Géochimiques, CNRS, Université de Lorraine, 15 rue Notre Dame des Pauvres, BP 20, 54501 Vandoeuvre lès Nancy, France. bmarty@crpg.cnrs-nancy.fr.
  • Altwegg K; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Balsiger H; Center for Space and Habitability, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Bar-Nun A; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Bekaert DV; Department of Geoscience, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel.
  • Berthelier JJ; Centre de Recherches Pétrographiques et Géochimiques, CNRS, Université de Lorraine, 15 rue Notre Dame des Pauvres, BP 20, 54501 Vandoeuvre lès Nancy, France.
  • Bieler A; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Institut Pierre Simon Laplace, CNRS, Université Pierre et Marie Curie, 4 Avenue de Neptune, 94100 Saint-Maur, France.
  • Briois C; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Calmonte U; Department of Climate and Space Sciences and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA.
  • Combi M; Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), UMR 6115 CNRS-Université d'Orléans, France.
  • De Keyser J; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Fiethe B; Department of Climate and Space Sciences and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA.
  • Fuselier SA; Koninklijk Belgisch Instituut voor Ruimte-Aeronomie/Institut Royal d'Aéronomie Spatiale de Belgique (BIRA-IASB), Ringlaan 3, B-1180 Brussels, Belgium.
  • Gasc S; Institute of Computer and Network Engineering (IDA), Technische Universität Braunschweig, Hans-Sommer-Straße 66, D-38106 Braunschweig, Germany.
  • Gombosi TI; Department of Space Science, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78228, USA.
  • Hansen KC; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Hässig M; Department of Climate and Space Sciences and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA.
  • Jäckel A; Department of Climate and Space Sciences and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA.
  • Kopp E; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Korth A; Department of Space Science, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78228, USA.
  • Le Roy L; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Mall U; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Mousis O; Max-Planck-Institut für Sonnensystemforschung (MPS), Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany.
  • Owen T; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Rème H; Max-Planck-Institut für Sonnensystemforschung (MPS), Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany.
  • Rubin M; Laboratoire d'Astrophysique de Marseille, CNRS, Aix Marseille Université, 13388 Marseille, France.
  • Sémon T; Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA.
  • Tzou CY; Institut de Recherche en Astrophysique et Planétologie, CNRS, Université Paul Sabatier, Observatoire Midi-Pyrénées, 9 Avenue du Colonel Roche, 31028 Toulouse Cedex 4, France.
  • Waite JH; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
  • Wurz P; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
Science ; 356(6342): 1069-1072, 2017 06 09.
Article in En | MEDLINE | ID: mdl-28596364
The origin of cometary matter and the potential contribution of comets to inner-planet atmospheres are long-standing problems. During a series of dedicated low-altitude orbits, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) on the Rosetta spacecraft analyzed the isotopes of xenon in the coma of comet 67P/Churyumov-Gerasimenko. The xenon isotopic composition shows deficits in heavy xenon isotopes and matches that of a primordial atmospheric component. The present-day Earth atmosphere contains 22 ± 5% cometary xenon, in addition to chondritic (or solar) xenon.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2017 Document type: Article Affiliation country: France Country of publication: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2017 Document type: Article Affiliation country: France Country of publication: United States