On biosignatures for Mars

Autor: Frédéric Foucher, Barbara Cavalazzi, Jorge L. Vago, Laura Clodoré, Keyron Hickman-Lewis, Frances Westall
Přispěvatelé: Centre de biophysique moléculaire (CBM), Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), University of Bologna/Università di Bologna, Agence Spatiale Européenne = European Space Agency (ESA), Frapart, Isabelle, Westall F., Hickman-Lewis K., Cavalazzi B., Foucher F., Clodoré L., Vago J.L.
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Astrobiology
International Journal of Astrobiology, 2021, 20 (6), pp.377-393. ⟨10.1017/S1473550421000264⟩
ISSN: 1475-3006
1473-5504
DOI: 10.1017/s1473550421000264
Popis: In this work, we address the difficulty of reliably identifying traces of life on Mars. Several independent lines of evidence are required to build a compelling body of proof. In particular, we underline the importance of correctly interpreting the geological and mineralogical context of the sites to be explored for the presence of biosignatures. We use as examples to illustrate this, ALH84001 (where knowledge of the geological context was very limited) and other terrestrial deposits, for which this could be properly established. We also discuss promising locations and formations to be explored by ongoing and future rover missions, including Oxia Planum, which, dated at 4.0 Ga, is the most ancient Mars location targeted for investigation yet.
Databáze: OpenAIRE
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