Supporting SHERLOC in the Detection of Kerogen as a BiosignatureJuly 06, 2018 / Posted by: Miki Huynh
Left: SHERLOC will be mounted on the arm of the Mars 2020 rover. Image source: NASA. Right: Stromatolitic limestone as a Mars analog sample containing kerogen (dark regions) as a complex fossil biosignature, hosted by carbonate (light regions), which was successfully detected by UV Raman and fluorescence spectroscopy in this study. Image source: S. Shkolyar / J. Farmer.
The upcoming Mars 2020 rover mission will hunt for signs of past microbial life and indications of habitable conditions on Mars. A device mounted on the rover’s arm, called SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals), will aid in the detection of kerogens, fossilized organic materials in sedimentary rocks.
To inform NASA’s planning strategies for SHERLOC, Svetlana Shkolyar, a 2014 recipient of the NASA Astrobiology Early Career Collaboration Award, and her research team analyzed the capabilities of co-located time-gated Raman and fluorescent spectroscopy in detecting and distinguishing kerogen when scanning Mars analogue samples.
The team’s findings, published in Astrobiology reveal promising results and highlight the value of combining co-located Raman and fluorescence spectroscopies, similar to those obtainable by SHERLOC, to strengthen the confidence of kerogen detection as a potential biosignature in complex samples.
Source: [Astrobiology (via SETI Institute)]
- NASA’s Astrobiology Program Evolving to Meet the Future
- Combined IAN / NAI Newsletter
- A New Initiative: The European Astrobiology Institute
- Was Life on the Early Earth Purple?
- NASA Astrobiology Program Student Early Career Collaboration Award
- Geoelectrodes and Fuel Cells for Simulating Hydrothermal Vent Environments
- AbSciCon 2019 Call for Proposals
- Astrobiology Science Strategy: Public Briefing Webcast
- Laughing Gas Could Have Helped Warm Early Earth
- Reassessing Exoplanet Meteorology from the Thermal Phase Variations