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Selection of the Mars Science Laboratory Landing Site

Golombek, M. and Grant, J. and Kipp, D. and Vasavada, A. and Kirk, R. and Fergason, R. and Bellutta, P. and Calef, F. and Larsen, K. and Katayama, Y. and Huertas, A. and Beyer, R. and Chen, A. and Parker, T. and Pollard, B. and Lee, S. and Sun, Y. and Hoover, R. and Sladek, H. and Grotzinger, J. and Welch, R. and Dobrea, E. Noe and Michalski, J. and Watkins, M. (2012) Selection of the Mars Science Laboratory Landing Site. Space Science Reviews, 170 (1-4). pp. 641-737. ISSN 0038-6308.

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The selection of Gale crater as the Mars Science Laboratory landing site took over five years, involved broad participation of the science community via five open workshops, and narrowed an initial >50 sites (25 by 20 km) to four finalists (Eberswalde, Gale, Holden and Mawrth) based on science and safety. Engineering constraints important to the selection included: (1) latitude (±30°) for thermal management of the rover and instruments, (2) elevation (< −1 km) for sufficient atmosphere to slow the spacecraft, (3) relief of <100–130 m at baselines of 1–1000 m for control authority and sufficient fuel during powered descent, (4) slopes of <30° at baselines of 2–5 m for rover stability at touchdown, (5) moderate rock abundance to avoid impacting the belly pan during touchdown, and (6) a radar-reflective, load-bearing, and trafficable surface that is safe for landing and roving and not dominated by fine-grained dust. Science criteria important for the selection include the ability to assess past habitable environments, which include diversity, context, and biosignature (including organics) preservation. Sites were evaluated in detail using targeted data from instruments on all active orbiters, and especially Mars Reconnaissance Orbiter. All of the final four sites have layered sedimentary rocks with spectral evidence for phyllosilicates that clearly address the science objectives of the mission. Sophisticated entry, descent and landing simulations that include detailed information on all of the engineering constraints indicate all of the final four sites are safe for landing. Evaluation of the traversabilty of the landing sites and target “go to” areas outside of the ellipse using slope and material properties information indicates that all are trafficable and “go to” sites can be accessed within the lifetime of the mission. In the final selection, Gale crater was favored over Eberswalde based on its greater diversity and potential habitability.

Item Type:Article
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URLURL TypeDescription
Vasavada, A.0000-0003-2665-286X
Kirk, R.0000-0003-0842-9226
Fergason, R.0000-0002-2044-1714
Grotzinger, J.0000-0001-9324-1257
Additional Information:© 2012 Springer Science+Business Media B.V. Received: 20 October 2011; Accepted: 25 June 2012; Published online: 21 July 2012. Research described in this paper was partially done by the MSL project, Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration and was supported by the Mars Data Analysis Program. Derived data products were sponsored by the Critical Data Products program administered by the JPL Mars Exploration Program office. We especially thank members of the Council of Atmospheres and Council of Terrains for work on characterizing MSL landing sites. We thank L. Redmond and N. Warner for help with the figures.
Funding AgencyGrant Number
Mars Data Analysis ProgramUNSPECIFIED
Subject Keywords:Landing sites; Mars; Surface materials; Surface characteristics; Mars Science Laboratory
Issue or Number:1-4
Record Number:CaltechAUTHORS:20121108-154625399
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35374
Deposited By: Jason Perez
Deposited On:09 Nov 2012 18:16
Last Modified:09 Mar 2020 13:18

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