The morphological diversity of comet 67P/Churyumov-Gerasimenko

Nicolas Thomas; Holger Sierks; Cesare Barbieri; Philippe L. Lamy; Rafael Rodrigo; Hans Rickman; Detlef Koschny; Horst Uwe Keller; Jessica Agarwal; Michael F. A'Hearn; Francesco Angrilli; Anne-Therese Auger; M. Antonella Barucci; Jean-Loup Bertaux; Ivano Bertini; Sebastien Besse; Dennis Bodewits; Gabriele Cremonese; Vania Da Deppo; Björn Davidsson; Mariolino De Cecco; Stefano Debei; Mohamed Ramy El-Maarry; Francesca Ferri; Sonia Fornasier; Marco Fulle; Lorenza Giacomini; Olivier Groussin; Pedro J. Gutierrez; Carsten Güttler; Stubbe F. Hviid; Wing-Huen Ip; Laurent Jorda; Jörg Knollenberg; J.-Rainer Kramm; Ekkehard Kührt; Michael Küppers; Fiorangela La Forgia; Luisa M. Lara; Monica Lazzarin; Josè J. Lopez Moreno; Sara Magrin; Simone Marchi; Francesco Marzari; Matteo Massironi; Harald Michalik; Richard Moissl; Stefano Mottola; Giampiero Naletto; Nilda Oklay; Maurizio Pajola; Antoine Pommerol; Frank Preusker; Lola Sabau; Frank Scholten; Colin Snodgrass; Cecilia Tubiana; Jean-Baptiste Vincent; Klaus-Peter Wenzel

doi:10.1126/science.aaa0440

Research Article

The morphological diversity of comet 67P/Churyumov-Gerasimenko

Nicolas Thomas¹,*,
Holger Sierks²,
Cesare Barbieri³,
Philippe L. Lamy⁴,
Rafael Rodrigo⁵,
Hans Rickman⁶,
Detlef Koschny⁷,
Horst Uwe Keller⁸,²²,
Jessica Agarwal²,
Michael F. A'Hearn⁹,
Francesco Angrilli¹⁰,
Anne-Therese Auger¹¹,
M. Antonella Barucci¹²,
Jean-Loup Bertaux¹³,
Ivano Bertini¹⁴,
Sebastien Besse⁷,
Dennis Bodewits⁹,
Gabriele Cremonese¹⁵,
Vania Da Deppo¹⁶,
Björn Davidsson¹⁷,
Mariolino De Cecco¹⁸,
Stefano Debei¹⁰,
Mohamed Ramy El-Maarry¹,
Francesca Ferri¹⁴,
Sonia Fornasier¹²,
Marco Fulle¹⁹,
Lorenza Giacomini²⁰,
Olivier Groussin¹¹,
Pedro J. Gutierrez²¹,
Carsten Güttler²,
Stubbe F. Hviid²²,²,
Wing-Huen Ip²³,
Laurent Jorda²⁴,
Jörg Knollenberg²²,
J.-Rainer Kramm²,
Ekkehard Kührt²²,
Michael Küppers²⁵,
Fiorangela La Forgia³,
Luisa M. Lara²¹,
Monica Lazzarin³,
Josè J. Lopez Moreno²¹,
Sara Magrin³,
Simone Marchi²⁶,
Francesco Marzari³,
Matteo Massironi²⁰,¹⁴,
Harald Michalik²⁷,
Richard Moissl²⁵,
Stefano Mottola²²,
Giampiero Naletto²⁸,¹⁶,¹⁴,
Nilda Oklay²,
Maurizio Pajola¹⁴,
Antoine Pommerol¹,
Frank Preusker²²,
Lola Sabau²⁹,
Frank Scholten²²,
Colin Snodgrass³⁰,²,
Cecilia Tubiana²,
Jean-Baptiste Vincent²,
Klaus-Peter Wenzel⁷

¹Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.
²Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
³Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
⁴Laboratoire d'Astrophysique de Marseille, UMR 7326, CNRS, and Aix Marseille Université, 38 Rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.
⁵International Space Science Institute, Hallerstraße 6, 3012 Bern, Switzerland, and Centro de Astrobiología, Consejo Superior de Investigaciones Cientificas - Instituto Nacional de Tecnica Aeroespacial, 28850 Torrejón de Ardoz, Madrid, Spain.
⁶Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden, and Polish Academy of Sciences Space Research Center, Bartycka 18A, PL-00716 Warszawa, Poland.
⁷Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.
⁸Institute for Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany.
⁹Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA.
¹⁰Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.
¹¹Aix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.
¹²Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique, Observatoire de Paris, CNRS, Université Paris 06, Université Paris-Diderot, 5 Place J. Janssen, 92195, Meudon, France.
¹³Laboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/IPSL, 11 Boulevard d'Alembert, 78280, Guyancourt, France.
¹⁴Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
¹⁵Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy.
¹⁶CNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova, Italy.
¹⁷Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden.
¹⁸UNITN, Universitá di Trento, Via Mesiano, 77, 38100 Trento, Italy.
¹⁹INAF, Osservatorio Astronomico, Via Tiepolo 11, 34014 Trieste, Italy.
²⁰Dipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, Italy.
²¹Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.
²²Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
²³National Central University, Graduate Institute of Astronomy, 300 Chung-Da Road, Chung-Li 32054, Taiwan.
²⁴Laboratoire d'Astrophysique de Marseille, 38 Rue de Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.
²⁵Science Operations Department, European Space Astronomy Centre/European Space Agency, Post Office Box 78, 28691 Villanueva de la Canada, Madrid, Spain.
²⁶Solar System Exploration Research Virtual Institute, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA.
²⁷Institut für Datentechnik und Kommunikationsnetze der Technische Universität Braunschweig, Hans-Sommer-Strasse 66, 38106 Braunschweig, Germany.
²⁸University of Padova, Department of Information Engineering, Via Gradenigo 6/B, 35131 Padova, Italy.
²⁹Instituto Nacional de Tecnica Aeroespacial, Carretera de Ajalvir, 28850 Torrejon de Ardoz (Madrid), Spain.
³⁰Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK.

↵*Corresponding author. E-mail: nicolas.thomas{at}space.unibe.ch

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Science 23 Jan 2015:
Vol. 347, Issue 6220, aaa0440
DOI: 10.1126/science.aaa0440

Nicolas Thomas

1Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.

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For correspondence: nicolas.thomas@space.unibe.ch

Holger Sierks

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Cesare Barbieri

3Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.

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Philippe L. Lamy

4Laboratoire d'Astrophysique de Marseille, UMR 7326, CNRS, and Aix Marseille Université, 38 Rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.

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Rafael Rodrigo

5International Space Science Institute, Hallerstraße 6, 3012 Bern, Switzerland, and Centro de Astrobiología, Consejo Superior de Investigaciones Cientificas - Instituto Nacional de Tecnica Aeroespacial, 28850 Torrejón de Ardoz, Madrid, Spain.

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Hans Rickman

6Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden, and Polish Academy of Sciences Space Research Center, Bartycka 18A, PL-00716 Warszawa, Poland.

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Detlef Koschny

7Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.

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Horst Uwe Keller

8Institute for Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany.

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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Jessica Agarwal

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Michael F. A'Hearn

9Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA.

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Francesco Angrilli

10Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.

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Anne-Therese Auger

11Aix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.

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M. Antonella Barucci

12Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique, Observatoire de Paris, CNRS, Université Paris 06, Université Paris-Diderot, 5 Place J. Janssen, 92195, Meudon, France.

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Jean-Loup Bertaux

13Laboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/IPSL, 11 Boulevard d'Alembert, 78280, Guyancourt, France.

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Ivano Bertini

14Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.

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Sebastien Besse

7Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.

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Dennis Bodewits

9Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA.

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Gabriele Cremonese

15Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy.

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Vania Da Deppo

16CNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova, Italy.

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Björn Davidsson

17Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden.

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Mariolino De Cecco

18UNITN, Universitá di Trento, Via Mesiano, 77, 38100 Trento, Italy.

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Stefano Debei

10Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.

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Mohamed Ramy El-Maarry

1Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.

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Francesca Ferri

14Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.

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Sonia Fornasier

12Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique, Observatoire de Paris, CNRS, Université Paris 06, Université Paris-Diderot, 5 Place J. Janssen, 92195, Meudon, France.

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Marco Fulle

19INAF, Osservatorio Astronomico, Via Tiepolo 11, 34014 Trieste, Italy.

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Lorenza Giacomini

20Dipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, Italy.

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Olivier Groussin

11Aix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.

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Pedro J. Gutierrez

21Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.

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Carsten Güttler

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Stubbe F. Hviid

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Wing-Huen Ip

23National Central University, Graduate Institute of Astronomy, 300 Chung-Da Road, Chung-Li 32054, Taiwan.

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Laurent Jorda

24Laboratoire d'Astrophysique de Marseille, 38 Rue de Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.

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Jörg Knollenberg

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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J.-Rainer Kramm

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Ekkehard Kührt

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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Michael Küppers

25Science Operations Department, European Space Astronomy Centre/European Space Agency, Post Office Box 78, 28691 Villanueva de la Canada, Madrid, Spain.

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Fiorangela La Forgia

3Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.

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Luisa M. Lara

21Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.

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Monica Lazzarin

3Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.

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Josè J. Lopez Moreno

21Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.

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Sara Magrin

3Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.

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Simone Marchi

26Solar System Exploration Research Virtual Institute, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA.

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Francesco Marzari

3Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.

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Matteo Massironi

20Dipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, Italy.

14Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.

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Harald Michalik

27Institut für Datentechnik und Kommunikationsnetze der Technische Universität Braunschweig, Hans-Sommer-Strasse 66, 38106 Braunschweig, Germany.

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Richard Moissl

25Science Operations Department, European Space Astronomy Centre/European Space Agency, Post Office Box 78, 28691 Villanueva de la Canada, Madrid, Spain.

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Stefano Mottola

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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Giampiero Naletto

28University of Padova, Department of Information Engineering, Via Gradenigo 6/B, 35131 Padova, Italy.

16CNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova, Italy.

14Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.

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Nilda Oklay

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Maurizio Pajola

14Centro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.

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Antoine Pommerol

1Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.

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Frank Preusker

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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Lola Sabau

29Instituto Nacional de Tecnica Aeroespacial, Carretera de Ajalvir, 28850 Torrejon de Ardoz (Madrid), Spain.

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Frank Scholten

22Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.

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Colin Snodgrass

30Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK.

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Cecilia Tubiana

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Jean-Baptiste Vincent

2Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.

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Klaus-Peter Wenzel

7Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.

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Abstract

Images of comet 67P/Churyumov-Gerasimenko acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) imaging system onboard the European Space Agency’s Rosetta spacecraft at scales of better than 0.8 meter per pixel show a wide variety of different structures and textures. The data show the importance of airfall, surface dust transport, mass wasting, and insolation weathering for cometary surface evolution, and they offer some support for subsurface fluidization models and mass loss through the ejection of large chunks of material.

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The morphological diversity of comet 67P/Churyumov-Gerasimenko

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