VPL Astrobiology Colloquium Series presents Morgan Cable

Event Details

VPL Astrobiology Colloquium Series presents Morgan Cable

Time: October 28, 2014 from 3pm to 4pm
Location: Adobe Connect
Website or Map: http://astrobiology.nasa.gov/…
Event Type: online, seminar
Organized By: Mike Toillion
Latest Activity: Oct 28, 2014

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Event Description

From Iceland to Titan and Beyond: Using Laboratory Investigations and Analogue Field Sites to Explore the Boundaries of Prebiotic and Biotic

Presenter: Morgan Cable, NASA Jet Propulsion Laboratory
When: October 28, 2014 3PM PDT

To place astrobiological investigations in context, we must understand the transition of prebiotic to biotic and how this influences planetary exploration. Titan is an excellent example of a prebiotic world, where photochemistry in the atmosphere leads to a plethora of organics on the surface. The liquid hydrocarbon lakes of Titan, composed primarily of methane and ethane, are a unique environment where dissolution and precipitation of species may lead to active processes on the surface. We have discovered that benzene forms an inclusion compound with ethane in Titan-like conditions, and may be the first example of surface processes capable of selectively sequestering and storing ethane in Titan surface materials.

In parallel, an international collaboration inspired by the 2012 NASA Nordic Astrobiology Summer School, successfully completed a field expedition to Iceland to test life detection techniques and decision-making strategies in a Mars-like analogue environment. We discovered that habitability and microbial diversity may vary widely, even in areas that appear to be geologically homogeneous. This has implications for field sampling and analysis of volcanic regions on Mars. Sampling strategies should target as many spatially separated sites as practical to improve the chances of detecting life.

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Comment by Sara Imari Walker on October 27, 2014 at 2:21pm

This sounds like it will be a great talk! Unfortunately it is during my Astronomy class so I'll miss the live broadcast :(

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