title: Cometary science. The morphological diversity of comet 67P/Churyumov-Gerasimenko.
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.
authors.affiliation: Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland. nicolas.thomas@space.unibe.ch.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Thomas
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Holger
authors.initials: H
authors.lastname: Sierks
authors.affiliation: Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
authors.forename: Cesare
authors.initials: C
authors.lastname: Barbieri
authors.affiliation: Laboratoire d'Astrophysique de Marseille, UMR 7326, CNRS, and Aix Marseille Université, 38 Rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.
authors.forename: Philippe L
authors.initials: PL
authors.lastname: Lamy
authors.affiliation: International 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.
authors.forename: Rafael
authors.initials: R
authors.lastname: Rodrigo
authors.affiliation: Department 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.
authors.forename: Hans
authors.initials: H
authors.lastname: Rickman
authors.affiliation: Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.
authors.forename: Detlef
authors.initials: D
authors.lastname: Koschny
authors.affiliation: Institute for Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany. Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Horst Uwe
authors.initials: HU
authors.lastname: Keller
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Jessica
authors.initials: J
authors.lastname: Agarwal
authors.affiliation: Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA.
authors.forename: Michael F
authors.initials: MF
authors.lastname: A'Hearn
authors.affiliation: Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Angrilli
authors.affiliation: Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.
authors.forename: Anne-Therese
authors.initials: AT
authors.lastname: Auger
authors.affiliation: Laboratoire 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.
authors.forename: M Antonella
authors.initials: MA
authors.lastname: Barucci
authors.affiliation: Laboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/IPSL, 11 Boulevard d'Alembert, 78280, Guyancourt, France.
authors.forename: Jean-Loup
authors.initials: JL
authors.lastname: Bertaux
authors.affiliation: Centro di Ateneo di Studi ed Attivitá Spaziali, "Giuseppe Colombo" (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
authors.forename: Ivano
authors.initials: I
authors.lastname: Bertini
authors.affiliation: Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.
authors.forename: Sebastien
authors.initials: S
authors.lastname: Besse
authors.affiliation: Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA.
authors.forename: Dennis
authors.initials: D
authors.lastname: Bodewits
authors.affiliation: Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Cremonese
authors.affiliation: CNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova, Italy.
authors.forename: Vania
authors.initials: V
authors.lastname: Da Deppo
authors.affiliation: Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden.
authors.forename: Björn
authors.initials: B
authors.lastname: Davidsson
authors.affiliation: UNITN, Universitá di Trento, Via Mesiano, 77, 38100 Trento, Italy.
authors.forename: Mariolino
authors.initials: M
authors.lastname: De Cecco
authors.affiliation: Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Debei
authors.affiliation: Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.
authors.forename: Mohamed Ramy
authors.initials: MR
authors.lastname: El-Maarry
authors.affiliation: Centro di Ateneo di Studi ed Attivitá Spaziali, "Giuseppe Colombo" (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Ferri
authors.affiliation: Laboratoire 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.
authors.forename: Sonia
authors.initials: S
authors.lastname: Fornasier
authors.affiliation: INAF, Osservatorio Astronomico, Via Tiepolo 11, 34014 Trieste, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Fulle
authors.affiliation: Dipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, Italy.
authors.forename: Lorenza
authors.initials: L
authors.lastname: Giacomini
authors.affiliation: Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Groussin
authors.affiliation: Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.
authors.forename: Pedro J
authors.initials: PJ
authors.lastname: Gutierrez
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Carsten
authors.initials: C
authors.lastname: Güttler
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Stubbe F
authors.initials: SF
authors.lastname: Hviid
authors.affiliation: National Central University, Graduate Institute of Astronomy, 300 Chung-Da Road, Chung-Li 32054, Taiwan.
authors.forename: Wing-Huen
authors.initials: WH
authors.lastname: Ip
authors.affiliation: Laboratoire d'Astrophysique de Marseille, 38 Rue de Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Jorda
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Knollenberg
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: J-Rainer
authors.initials: JR
authors.lastname: Kramm
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Ekkehard
authors.initials: E
authors.lastname: Kührt
authors.affiliation: Science Operations Department, European Space Astronomy Centre/European Space Agency, Post Office Box 78, 28691 Villanueva de la Canada, Madrid, Spain.
authors.forename: Michael
authors.initials: M
authors.lastname: Küppers
authors.affiliation: Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
authors.forename: Fiorangela
authors.initials: F
authors.lastname: La Forgia
authors.affiliation: Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.
authors.forename: Luisa M
authors.initials: LM
authors.lastname: Lara
authors.affiliation: Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Lazzarin
authors.affiliation: Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.
authors.forename: Josè J
authors.initials: JJ
authors.lastname: Lopez Moreno
authors.affiliation: Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
authors.forename: Sara
authors.initials: S
authors.lastname: Magrin
authors.affiliation: Solar System Exploration Research Virtual Institute, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA.
authors.forename: Simone
authors.initials: S
authors.lastname: Marchi
authors.affiliation: Department of Physics and Astronomy, University of Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Marzari
authors.affiliation: Dipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, Italy. Centro di Ateneo di Studi ed Attivitá Spaziali, "Giuseppe Colombo" (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Massironi
authors.affiliation: Institut für Datentechnik und Kommunikationsnetze der Technische Universität Braunschweig, Hans-Sommer-Strasse 66, 38106 Braunschweig, Germany.
authors.forename: Harald
authors.initials: H
authors.lastname: Michalik
authors.affiliation: Science Operations Department, European Space Astronomy Centre/European Space Agency, Post Office Box 78, 28691 Villanueva de la Canada, Madrid, Spain.
authors.forename: Richard
authors.initials: R
authors.lastname: Moissl
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Stefano
authors.initials: S
authors.lastname: Mottola
authors.affiliation: University of Padova, Department of Information Engineering, Via Gradenigo 6/B, 35131 Padova, Italy. CNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova, Italy. Centro di Ateneo di Studi ed Attivitá Spaziali, "Giuseppe Colombo" (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
authors.forename: Giampiero
authors.initials: G
authors.lastname: Naletto
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Nilda
authors.initials: N
authors.lastname: Oklay
authors.affiliation: Centro di Ateneo di Studi ed Attivitá Spaziali, "Giuseppe Colombo" (CISAS), University of Padova, Via Venezia 15, 35131 Padova, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Pajola
authors.affiliation: Physikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland.
authors.forename: Antoine
authors.initials: A
authors.lastname: Pommerol
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Preusker
authors.affiliation: Instituto Nacional de Tecnica Aeroespacial, Carretera de Ajalvir, 28850 Torrejon de Ardoz (Madrid), Spain.
authors.forename: Lola
authors.initials: L
authors.lastname: Sabau
authors.affiliation: Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Asteroiden und Kometen, Rutherfordstraße 2, 12489 Berlin, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Scholten
authors.affiliation: Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Colin
authors.initials: C
authors.lastname: Snodgrass
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Tubiana
authors.affiliation: Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.
authors.forename: Jean-Baptiste
authors.initials: JB
authors.lastname: Vincent
authors.affiliation: Scientific Support Office, European Space Agency, 2201, Noordwijk, Netherlands.
authors.forename: Klaus-Peter
authors.initials: KP
authors.lastname: Wenzel