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"What exactly are the methods used for dating fossils and/or meteorites believed to be in excess of 1 billion years old? Are errors common?"

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Now showing: Year 2007 projects that addressed Astrobiology Roadmap Objective 1.1 from the ARC team

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2007 [x]

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1 Determine whether the atmosphere of the early Earth, hydrothermal or exogenous matter were significant sources of organic matter.

2 Develop and test plausible pathways by which ancient counterparts of membrane systems, proteins and nucleic acid were synthesized from simpler precursors and assembled into protocells.

3 Replicating, catalytic systems capable of evolution, and construct laboratory models of metabolism in primitive living systems.

4 Expand and interpret the genomic database of a select group of key microorganisms in order to reveal the history and dynamics of evolution.

5 Describe the sequences of causes and effects associated with the development of Earth's early biosphere and the global environment.

6 Define how ecophysiological processes structure microbial communities, influence their adaptation and evolution, and affect their detection on other planets.

7 Identify the environmental limits for by examining biological adaptations to extremes in environmental conditions.

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