NASA: National Aeronautics and Space Administration

  1. Content with the tag: “biosignatures

  2. Biosignatures in Extraterrestrial Samples

    ROADMAP OBJECTIVES: 16, 8

    Evolution of a Habitable Planet (Brantley)

    ROADMAP OBJECTIVES: 1.1

    Evolution of a Habitable Planet (Stewart)

    ROADMAP OBJECTIVES: 4.1, 6.1

    Iron and sulfur-based biospheres and their biosignatures

    ROADMAP OBJECTIVES: 4.1, 6.1, 7.1, 7.2

    Isotopic fingerprints of past life and surface conditions on Mars

    ROADMAP OBJECTIVES: 1.1, 2.1, 7.1

    Laboratory Microbial Simulations: Astrobiological Signatures

    ROADMAP OBJECTIVES: 2.1, 4.1, 5.1, 5.2, 5.3, 7.1

    Molecular Signatures of Life on the Edge (DDF project)

    ROADMAP OBJECTIVES: 2.1, 5.1, 5.2, 5.3, 7.1

    The Virtual Planetary Laboratory – The Life Modules - Photosynthesis

    ROADMAP OBJECTIVES: 5.1, 6.1, 6.2, 7.2
  3. Biosignatures in Ancient Rocks Workshop Proceedings Now Available


    In September, 2007, an NAI co-sponsored workshop entitled “Biosignatures in Ancient Rocks” was held in Ontario, Canada. Spearheaded by experts in the field, workshop attendees heard lectures, participated in discussions, and examined field sites toward a greater understanding of early Earth biosignatures, what the remaining major questions and problems are, and how they can be answered and solved. The proceedings from the workshop are available in the current issue of Astrobiology.

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  4. Extracellular Protein-Metal Aggregates: A New Biosignature?


    Deep inside a flooded mine in Wisconsin, scientists from NAI’s University of California, Berkeley Team have discovered an environment in which bacteria emit proteins that sweep up metal nanoparticles into immobile clumps. Their finding may lead to innovative ways to remediate subsurface metal toxins, and have exciting implications for identifying biosignatures on Earth and other worlds. The research, published in the June 14th issue of Science, was done in collaboration with a team from the U.S. Department of Energy’s Lawrence Berkeley National Laboratory.

    Source: [Link]

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