Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 – 23 September 2022
Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 September – 23 September 2022
EPSC Abstracts
Vol. 16, EPSC2022-1097, 2022
Europlanet Science Congress 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

EnVision: understanding why our closest neighbour is so different 

Thomas Widemann1, Anne Grete Straume-Lindner2, Adriana C. Ocampo3, Thomas Voirin2, Ann Carine Vandaele4, Alberto Moreira5, Bruce Campbell6, Caroline Dumoulin7, Emmanuel Marcq8, Gabriella Gilli9, Jörn Helbert10, Walter Kiefer11, Lynn Carter12, Lorenzo Bruzzone13, Philippa Mason14, Scott Hensley15, and Tatiana Bocanegra-Bahamon15
Thomas Widemann et al.
  • 1CNRS Paris Observatory, LESIA, Meudon, France (
  • 2ESA-ESTEC, Noordwijk, The Netherlands
  • 3NASA Headquarters, Washington DC, USA
  • 4Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
  • 5DLR Microwaves and Radar Institute, Oberpfaffenhofen, Germany
  • 6Smithsonian Institution, Washington, DC, USA
  • 7LPG, Université de Nantes, France
  • 8LATMOS, IPSL, Guyancourt, France;
  • 9Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain
  • 10DLR Institute of Planetary Research, Berlin, Germany
  • 11Lunar and Planetary Institute, Houston, TX, USA
  • 12Lunar and Planetary Laboratory, University of Arizona, AZ, USA
  • 13Università di Trento, Italy
  • 14Imperial College London, UK
  • 15Jet Propulsion Laboratory, Pasadena, CA, USA


EnVision was selected as ESA's 5th Medium-class mission in the Agency's Cosmic Vision plan, targeting a launch in the early 2030s. EnVision's overarching science questions are to explore the full range of geoscientific processes operating on Venus. It will investigate Venus from its inner core to its atmosphere at an unprecedented scale of resolution, characterising in particular core and mantle structure, signs of past geologic processes, and looking for evidence of past liquid water. Far more than a simple radar mission, this suite of investigations works together to comprehensively assess surface and subsurface geological processes, interior geophysics and geodynamics, and atmospheric pathways of key volcanogenic gases, which together illuminate how and why Venus turned out so differently to Earth. Recent modeling studies strongly suggest that the evolution of the atmosphere and interior of Venus are coupled, emphasizing the need to study the atmosphere, surface, and interior of Venus as a system. 

EnVision is an ESA Venus orbiter mission formulated in collaboration with NASA; As a key partner in the mission, NASA provides the Synthetic Aperture Radar, VenSAR. The EnVision payload consists of five instruments provided by European and US institutions. The five instruments comprise a comprehensive measurement suite spanning infrared, ultraviolet- visible, microwave and high frequency wavelengths, complemented by the Radio Science investigation exploiting the spacecraft TT&C system. All instruments in the payload have substantial heritage and robust margins relative to the requirements with designs suitable for operation in the Venus environment. This suite of instruments was chosen to meet the broad spectrum of measurement requirements needed to support EnVision science investigations.

How to cite: Widemann, T., Straume-Lindner, A. G., Ocampo, A. C., Voirin, T., Vandaele, A. C., Moreira, A., Campbell, B., Dumoulin, C., Marcq, E., Gilli, G., Helbert, J., Kiefer, W., Carter, L., Bruzzone, L., Mason, P., Hensley, S., and Bocanegra-Bahamon, T.: EnVision: understanding why our closest neighbour is so different , Europlanet Science Congress 2022, Granada, Spain, 18–23 Sep 2022, EPSC2022-1097,, 2022.


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