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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28341
Title: Explorer of Enceladus and Titan (E2T): Investigating ocean worlds' evolution and habitability in the solar system
Authors: Mitri, Giuseppe
Postberg, Frank
Soderblom, Jason M.
Wurz, Peter
Tortora, Paolo
Abel, Bernd
Barnes, Jason W.
Berga, Marco
Carrasco, Nathalie
Coustenis, Athena
Paul de Vera, Jean Pierre
D'Ottavio, Andrea
Ferri, Francesca
Hayes, Alexander G.
Hayne, Paul O.
Hillier, Jon K.
Kempf, Sascha
Lebreton, Jean-Pierre
Lorenz, Ralph D.
Martelli, Andrea
OROSEI, ROBERTO 
Petropoulos, Anastassios E.
Reh, Kim
Schmidt, Juergen
Sotin, Christophe
Srama, Ralf
Tobie, Gabriel
Vorburger, Audrey
Vuitton, Véronique
Wong, Andre
Zannoni, Marco
Issue Date: 2018
Journal: PLANETARY AND SPACE SCIENCE 
Number: 155
First Page: 73
Abstract: Titan, with its organically rich and dynamic atmosphere and geology, and Enceladus, with its active plume, both harbouring global subsurface oceans, are prime environments in which to investigate the habitability of ocean worlds and the conditions for the emergence of life. We present a space mission concept, the Explorer of Enceladus and Titan (E<SUP>2</SUP>T), which is dedicated to investigating the evolution and habitability of these Saturnian satellites. E<SUP>2</SUP>T is proposed as a medium-class mission led by ESA in collaboration with NASA in response to ESA's M5 Cosmic Vision Call. E<SUP>2</SUP>T proposes a focused payload that would provide in-situ composition investigations and high-resolution imaging during multiple flybys of Enceladus and Titan using a solar-electric powered spacecraft in orbit around Saturn. The E<SUP>2</SUP>T mission would provide high-resolution mass spectrometry of the plume currently emanating from Enceladus' south polar terrain and of Titan's changing upper atmosphere. In addition, high-resolution infrared (IR) imaging would detail Titan's geomorphology at 50-100 m resolution and the temperature of the fractures on Enceladus' south polar terrain at meter resolution. These combined measurements of both Titan and Enceladus would enable the E<SUP>2</SUP>T mission scenario to achieve two major scientific goals: 1) Study the origin and evolution of volatile-rich ocean worlds; and 2) Explore the habitability and potential for life in ocean worlds. E<SUP>2</SUP>T's two high-resolution time-of-flight mass spectrometers would enable resolution of the ambiguities in chemical analysis left by the NASA/ESA/ASI Cassini-Huygens mission regarding the identification of low-mass organic species, detect high-mass organic species for the first time, further constrain trace species such as the noble gases, and clarify the evolution of solid and volatile species. The high-resolution IR camera would reveal the geology of Titan's surface and the energy dissipated by Enceladus' fractured south polar terrain and plume in detail unattainable by the Cassini mission.
URI: http://hdl.handle.net/20.500.12386/28341
URL: https://www.sciencedirect.com/science/article/abs/pii/S0032063317301447
ISSN: 0032-0633
DOI: 10.1016/j.pss.2017.11.001
Bibcode ADS: 2018P&SS..155...73M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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E2T_manuscript_PSS.pdfpreprint2.73 MBAdobe PDFView/Open
PSS1-s2.0-S0032063317301447-main.pdf[Administrators only]5.68 MBAdobe PDF
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