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HOME: Habitability of Martian Environments: Exploring the Physiological and Environmental Limits of Life



  • Approved (ERC Advanced Grant 2013 Research proposal)
  • P-I: Prof. Dr. Dirk Schulze-Makuch (TU Berlin, Washington State University)
  • Co-P-I: Dr. Jean-Pierre Paul de Vera (DLR, Institute of Planetary Research, Berlin)

General summary of the project HOME

The low average temperature and low water activity of the Martian near-surface environment makes it challenging for living organisms to persist and propagate. Nonetheless, recent mission results indicate that environmental conditions exceed locally and temporarily the lower thresholds for life to exist. Furthermore, specific soil minerals, or combinations thereof, appear to provide a suitable habitat for microbial life, especially if associated with low-temperature brines or hygroscopic salts. Thus, a quantitative understanding of the habitability potential of the Martian near-surface environment, past and present, is very much needed and the focus of HOME.

To achieve this objective, it is planned to test different types of soils and some of Earth’s hardiest organisms, using them as models (‘Mars-analogues’), to see if they can survive and perhaps even grow under the various environmental stresses known to exist on Mars.

A major tool of the laboratory investigations will be the experimentally proven state-of-the-art Mars Simulation Chamber at the German Aero Space Center, to which various soils materials and microorganisms will be exposed. The planned experimental investigations and models will be concurrently updated by analyzed mission data, particularly from landers and rovers (e.g., Curiosity Rover), to adjust this work to the newest Martian geochemical and environmental data available. Results from the HOME-related work will timely provide critical scientific knowledge to interpret incoming data from ESA’s ExoMars mission, which is scheduled for launch in 2016/2018. As one important deliverable of this work will also be to construct a Mars Soil Analyzer, an instrument which will be designed for a future mission to Mars with the objective to achieve Technology Readiness Level 6 at the completion of the proposed study.


Contact
Dr.rer.nat. Jean Pierre Paul de Vera
German Aerospace Center

Institute of Planetary Research
, Management and Infrastructure
Berlin

Tel.: +49 30 67055-309

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DAbG Tagung 2016 (2.71 MB)
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