False Negatives for Remote Life Detection on Ocean-Bearing Planets: Lessons from the Early Earth
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DOI: 10.1089/ast.2016.1598
Abstract: Abstract Ocean-atmosphere chemistry on Earth has undergone dramatic evolutionary changes throughout its long history, with potentially significant ramifications for the emergence and long-term stability of atmospheric biosignatures. Though a great deal of work has centered… read more here.
Keywords: astrobiology; remote life; life detection; earth ... See more keywords
The Ladder of Life Detection
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DOI: 10.1089/ast.2017.1773
Abstract: Abstract We describe the history and features of the Ladder of Life Detection, a tool intended to guide the design of investigations to detect microbial life within the practical constraints of robotic space missions. To… read more here.
Keywords: astrobiology; detection ladder; life detection; life ... See more keywords
Evaluating Biosignatures for Life Detection
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DOI: 10.1089/ast.2019.2151
Abstract: Conceptual frameworks are developed for evaluating the ability of different biosignatures to provide evidence for the presence of life in planned missions or observational studies. The focus is on intrinsic characteristics of biosignatures in space… read more here.
Keywords: detection; biosignatures life; theory; life detection ... See more keywords
Pyrolysis of Carboxylic Acids in the Presence of Iron Oxides: Implications for Life Detection on Missions to Mars.
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DOI: 10.1089/ast.2020.2226
Abstract: The search for, and characterization of, organic matter on Mars is central to efforts in identifying habitable environments and detecting evidence of life in the martian surface and near surface. Iron oxides are ubiquitous in… read more here.
Keywords: iron; life detection; organic matter; iron oxides ... See more keywords
Microbial Characterization of Arctic Glacial Ice Cores with a Semiautomated Life Detection System.
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DOI: 10.1089/ast.2022.0130
Abstract: The search for extant microbial life will be a major focus of future astrobiology missions; however, no direct extant life detection instrumentation is included in current missions to Mars. In this study, we developed the… read more here.
Keywords: ice cores; life detection; detection; astrobiology ... See more keywords