KECK INSTITUTE FOR SPACE STUDIES

     


Short Course Presentations

Karen Lloyd
Univ. of Tennessee
Microbial Energy Sources and Subsurface Life
(.pdf)
Frank Corsetti
USC
Proof of Microbial Life: Geobiology in Planetary Analog Systems
(.pdf)
Christine Foreman
Montana State Univ.
Extreme Environment Microbiology in Ices
(.pdf)
Martin Homann
Univ. College London

Understanding Astrobiological False Positives from Terrestrial Microbiology
(.pdf)









Program:

Lecture 1 – "Microbial Energy Sources and Subsurface Life" – Karen Lloyd

Goal: To highlight the nutrients and potential metabolic processes of subsurface microbiology.

  • What are the typical nutrient sources for microbial life?
  • Within subsurface regolith settings what has been the best methods of preservation?
  • What has been an example of a successful determination of biogenicity in the rock and mineral record?

Lecture 2 – "Proof of Microbial Life: Geobiology in Planetary Analog Systems" – Frank Corsetti

Goal: To quantify multiple lines of evidence for physical biosignatures with biological references in the geologic record.

  • What are the metrics of biogenicity that build confidence in preservation of biology?
  • How can geobiology in the terrestrial rock record help inform future astrobiology measurements?
  • What are the pitfalls of false positives that have been misinterpreted that we can learn from?

Lecture 3 – "Extreme Environment Microbiology in Ices" – Christine Foreman

Goal: To quantify the degree of biogenicity from microorganisms and habitats in frozen environments.

  • How can the survivability of microbial communities in ice help guide proper life detection experiments?
  • What has impacted and improved the degree of biogenic and biotic preservation in frozen settings?
  • What are the best practices for a design of experiments for assessing cellular communities in ices?

Lecture 4 – "Understanding Astrobiological False Positives from Terrestrial Microbiology" – Martin Homann

Goal: To highlight the rock record preservation of biogenic information and to determine how to avoid false positives.

  • What lines of evidence provide the clearest validation of ancient biology in the record?
  • What sample lithologies and accompanying micriobiological techniques should we use for terrestrial life detection?
  • How can we use the lessons learned from terrestrial geobiology to help us design a planetary design of experiments?