A new analysis of mars "Special Regions"

Findings of the second MEPAG special regions science analysis group (SR-SAG2)

John D. Rummel, David W. Beaty, Melissa A. Jones, Corien Bakermans, Nadine G. Barlow, Penelope J. Boston, Vincent F. Chevrier, Benton C. Clark, Jean Pierre P De Vera, Raina V. Gough, John E. Hallsworth, James W. Head, Victoria J. Hipkin, Thomas L. Kieft, Alfred S. Mcewen, Michael T. Mellon, Jill A. Mikucki, Wayne L. Nicholson, Christopher R. Omelon, Ronald Peterson & 5 others Eric E. Roden, Barbara Sherwood Lollar, Kenneth L. Tanaka, Donna Viola, James J. Wray

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and updated the description of Special Regions on Mars as places where terrestrial organisms might replicate (per the COSPAR Planetary Protection Policy). This review and update was conducted by an international team (SR-SAG2) drawn from both the biological science and Mars exploration communities, focused on understanding when and where Special Regions could occur. The study applied recently available data about martian environments and about terrestrial organisms, building on a previous analysis of Mars Special Regions (2006) undertaken by a similar team. Since then, a new body of highly relevant information has been generated from the Mars Reconnaissance Orbiter (launched in 2005) and Phoenix (2007) and data from Mars Express and the twin Mars Exploration Rovers (all 2003). Results have also been gleaned from the Mars Science Laboratory (launched in 2011). In addition to Mars data, there is a considerable body of new data regarding the known environmental limits to life on Earth - including the potential for terrestrial microbial life to survive and replicate under martian environmental conditions. The SR-SAG2 analysis has included an examination of new Mars models relevant to natural environmental variation in water activity and temperature; a review and reconsideration of the current parameters used to define Special Regions; and updated maps and descriptions of the martian environments recommended for treatment as "Uncertain" or "Special" as natural features or those potentially formed by the influence of future landed spacecraft. Significant changes in our knowledge of the capabilities of terrestrial organisms and the existence of possibly habitable martian environments have led to a new appreciation of where Mars Special Regions may be identified and protected. The SR-SAG also considered the impact of Special Regions on potential future human missions to Mars, both as locations of potential resources and as places that should not be inadvertently contaminated by human activity. Key Words: Martian environments - Mars astrobiology - Extreme environment microbiology - Planetary protection - Exploration resources.

Original languageEnglish (US)
Pages (from-to)887-968
Number of pages82
JournalAstrobiology
Volume14
Issue number11
DOIs
StatePublished - Nov 1 2014

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Mars exploration
Mars
mars
planetary protection
organisms
resources
Mars environment
Mars Reconnaissance Orbiter
microbiology
Mars Express
exobiology
Phoenix (AZ)
Committee on Space Research
water activity
committees
water temperature
science
analysis
analysis programme
spacecraft

ASJC Scopus subject areas

  • Space and Planetary Science
  • Agricultural and Biological Sciences (miscellaneous)

Cite this

A new analysis of mars "Special Regions" : Findings of the second MEPAG special regions science analysis group (SR-SAG2). / Rummel, John D.; Beaty, David W.; Jones, Melissa A.; Bakermans, Corien; Barlow, Nadine G.; Boston, Penelope J.; Chevrier, Vincent F.; Clark, Benton C.; De Vera, Jean Pierre P; Gough, Raina V.; Hallsworth, John E.; Head, James W.; Hipkin, Victoria J.; Kieft, Thomas L.; Mcewen, Alfred S.; Mellon, Michael T.; Mikucki, Jill A.; Nicholson, Wayne L.; Omelon, Christopher R.; Peterson, Ronald; Roden, Eric E.; Sherwood Lollar, Barbara; Tanaka, Kenneth L.; Viola, Donna; Wray, James J.

In: Astrobiology, Vol. 14, No. 11, 01.11.2014, p. 887-968.

Research output: Contribution to journalArticle

Rummel, JD, Beaty, DW, Jones, MA, Bakermans, C, Barlow, NG, Boston, PJ, Chevrier, VF, Clark, BC, De Vera, JPP, Gough, RV, Hallsworth, JE, Head, JW, Hipkin, VJ, Kieft, TL, Mcewen, AS, Mellon, MT, Mikucki, JA, Nicholson, WL, Omelon, CR, Peterson, R, Roden, EE, Sherwood Lollar, B, Tanaka, KL, Viola, D & Wray, JJ 2014, 'A new analysis of mars "Special Regions": Findings of the second MEPAG special regions science analysis group (SR-SAG2)', Astrobiology, vol. 14, no. 11, pp. 887-968. https://doi.org/10.1089/ast.2014.1227
Rummel, John D. ; Beaty, David W. ; Jones, Melissa A. ; Bakermans, Corien ; Barlow, Nadine G. ; Boston, Penelope J. ; Chevrier, Vincent F. ; Clark, Benton C. ; De Vera, Jean Pierre P ; Gough, Raina V. ; Hallsworth, John E. ; Head, James W. ; Hipkin, Victoria J. ; Kieft, Thomas L. ; Mcewen, Alfred S. ; Mellon, Michael T. ; Mikucki, Jill A. ; Nicholson, Wayne L. ; Omelon, Christopher R. ; Peterson, Ronald ; Roden, Eric E. ; Sherwood Lollar, Barbara ; Tanaka, Kenneth L. ; Viola, Donna ; Wray, James J. / A new analysis of mars "Special Regions" : Findings of the second MEPAG special regions science analysis group (SR-SAG2). In: Astrobiology. 2014 ; Vol. 14, No. 11. pp. 887-968.
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