Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past

Author:

El-Maarry M. Ramy12ORCID,Groussin O.3ORCID,Thomas N.1ORCID,Pajola M.4ORCID,Auger A.-T.3ORCID,Davidsson B.5,Hu X.6ORCID,Hviid S. F.7ORCID,Knollenberg J.7ORCID,Güttler C.6,Tubiana C.6ORCID,Fornasier S.8ORCID,Feller C.8ORCID,Hasselmann P.8,Vincent J.-B.7ORCID,Sierks H.6,Barbieri C.9,Lamy P.10,Rodrigo R.1112ORCID,Koschny D.13,Keller H. U.714,Rickman H.1516,A’Hearn M. F.17ORCID,Barucci M. A.8ORCID,Bertaux J.-L.18,Bertini I.9ORCID,Besse S.13,Bodewits D.17ORCID,Cremonese G.19ORCID,Da Deppo V.20,Debei S.21ORCID,De Cecco M.22ORCID,Deller J.6ORCID,Deshapriya J. D. P.8ORCID,Fulle M.23ORCID,Gutierrez P. J.24ORCID,Hofmann M.6ORCID,Ip W.-H.25,Jorda L.3,Kovacs G.6ORCID,Kramm J.-R.6ORCID,Kührt E.7ORCID,Küppers M.13ORCID,Lara L. M.24ORCID,Lazzarin M.9ORCID,Lin Z.-Yi25,Lopez Moreno J. J.24ORCID,Marchi S.26ORCID,Marzari F.9ORCID,Mottola S.7ORCID,Naletto G.202728ORCID,Oklay N.7ORCID,Pommerol A.1,Preusker F.7ORCID,Scholten F.7ORCID,Shi X.6ORCID

Affiliation:

1. Physikalisches Institut, Universität Bern, 3012 Bern, Switzerland.

2. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80301, USA.

3. Aix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 13388 Marseille, France.

4. NASA Ames Research Center, Moffett Field, CA 94035, USA.

5. Jet Propulsion Laboratory, Pasadena, CA 91109, USA.

6. Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.

7. Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, 12489 Berlin, Germany.

8. LESIA, Observatoire de Paris, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, UPMC Université Paris 06, Sorbonne Universités, Meudon Principal Cedex 92195, France.

9. Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.

10. Laboratoire d’Astrophysique de Marseille, UMR 7326 CNRS & Université Aix-Marseille, 13388 Marseille Cedex 13, France.

11. Centro de Astrobiología, Instituto Nacional de Técnica Aeroespacial, 28850 Torrejón de Ardoz, Madrid, Spain.

12. International Space Science Institute, 3012 Bern, Switzerland.

13. Operations Department, European Space Astronomy Centre/ESA, P.O. Box 78, 28691 Villanueva de la Cañada, Madrid, Spain.

14. Institut für Geophysik und Extraterrestrische Physik, Technische Universität Braunschweig, 38106 Braunschweig, Germany.

15. Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden.

16. Polish Academy of Sciences, Space Research Center, 00716 Warsaw, Poland.

17. Department of Astronomy, University of Maryland, College Park, MD 20742, USA.

18. Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), CNRS–Université de Versailles Saint-Quentin-en-Yvelines–Institut Pierre Simon Laplace, 78280 Guyancourt, France.

19. Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, 35122 Padova, Italy.

20. Consiglio Nazionale delle Ricerche–Istituto di Fotonica e Nanotecnologie, Unità Organizzativa di Supporto, Padova Luxor, 35131 Padova, Italy.

21. Department of Industrial Engineering, University of Padova, 35131 Padova, Italy.

22. University of Trento, 38123 Trento, Italy.

23. INAF, Osservatorio Astronomico di Trieste, 34014 Trieste, Italy.

24. Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.

25. Graduate Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan.

26. Solar System Exploration Research, Virtual Institute, Southwest Research Institute, Boulder, CO 80302, USA.

27. Department of Information Engineering, University of Padova, 35131 Padova, Italy.

28. Centro di Ateneo di Studi ed Attivitá Spaziali “Giuseppe Colombo” (CISAS), University of Padova, 35131 Padova, Italy.

Abstract

Changes to the surface geology of comet 67P/Churyumov-Gerasimenko are driven by seasonal factors.

Funder

Swiss National Science Foundation

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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