Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
Exobiology and Future Mars Missions
Author: Exobiology and Future Mars Missions
Author: Ames Research CenterPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Definition of Exobiology Experiments for Future Mars Missions
Author: National Aeronautics and Space Adm NasaPublisher: Independently Published
ISBN: 9781792070839
Category :
Languages : en
Pages : 26
Book Description
During the past year we have concentrated on two objectives. The first objective is ongoing and is to define the experimental parameters that are necessary to conduct autonomously a mineralogical analysis of the Martian surface in situ using differential thermal analysis coupled with gas chromatography (DTA/GC). The rationale in support of this objective is that proper interpretation of the mineralogical data from the DTA/GC can be used to better describe the present and past environments of Mars, leading to a better assessment of the probability of life evolving on Mars. To meet these objectives we have analyzed a number of samples collected from nature using the DTA/GC. One of the more significant findings was that in samples of desert varnish we detected magnetite and maghemite that may serve as potential biomarkers applicable to DTA/GC analyses of Martian surface material during landed missions. The second objective follows from the first and is to better understand microbe-environment interactions by determining the response of microbes to changes in their environment, including extreme desiccation and solar UV-radiation. The rationale behind this is to develop hypotheses regarding what may have happened to life that may have arose on Mars, and microbial life that may get to the surface of Mars via spacecraft, or meteors from Earth. To accomplish this objective we have exposed microbes, collected from NaCl and gypsum-halite crystals, to the space environment aboard the ESA-German Biopan facility for 15 days. The most significant finding was that these microbes survived the exposure better than others. Mancinelli, Rocco L. Ames Research Center NASA-CR-200257, NAS 1.26:200257 NCC2-479...
Exobiology and Future Mars Missions
Author: Christopher P. McKayPublisher:
ISBN:
Category : Exobiology
Languages : en
Pages : 0
Book Description
Planetary Protection Issues and Future Mars Missions
Author: Donald L. DeVincenziPublisher:
ISBN:
Category : Exobiology
Languages : en
Pages : 68
Book Description
Planetary Protection Implementation on Future Mars Lander Missions
Author: R. HowellPublisher:
ISBN:
Category : Planetary quarantine
Languages : en
Pages : 40
Book Description
Discusses planetary protection issues for the Russian Mars '94 mission, as well as for future Mars lander missions including the planned Mars '96 and U.S. MESUR Pathfinder and Network missions. The topics summarized include exobiology science objectives for Mars exploration, current international policy on planetary protection, planetary protection requirements developed for earlier missions, mission plans and designs for future U.S. and Russian Mars landers, biological contamination of spacecraft components, and techniques for spacecraft bioload reduction. In addition, the recent recommendations of the U.S. Space Studies Board (SSB) were also summarized. One additional topic briefly considered was the identification of some issues related to planetary protection considerations for Mars sample return missions.
Exobiology on Mars
Author: Donald L. DeVincenziPublisher:
ISBN:
Category : Exobiology
Languages : en
Pages : 88
Book Description
An Exobiological Strategy for Mars Exploration
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722181727
Category :
Languages : en
Pages : 62
Book Description
The idea of searching for evidence of life on Mars may strike some as far-fetched, even fanciful. But there is a compelling logic to such a quest, as well as an equally compelling excitement. Early environments were apparently sufficiently similar on Mars and Earth, and life arose so rapidly on Earth once conditions became clement, that emergence of life on both planets at that time is scarcely less plausible than emergence on only one. Furthermore, although a fossil on Mars might seem at first like a proverbial needle in a haystack, experience on Earth tell us that if we know where to look, finding evidence of ancient life is not particularly difficult, especially when one considers that such evidence can be relatively widely disseminated in the form of chemical or isotopic signatures. The key is to recognize that the search for ancient life on Mars will involve a logically designed sequence of missions, each of which will focus on defining ever more closely where and how biosignatures may be found. Although one can never rule out a chance discovery, this quest should not be approached as one that will yield to a single, expeditious mission. (In fact, the proposed strategy lends itself particularly well to the use of a series of relatively small, inexpensive spacecraft, rather than a single flagship-class mission). The search for life on Mars will take time and commitment, but the reward could be a discovery of inestimable importance, not just to science, but to humanity as a whole. Unspecified Center...
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