6/1: Astrobiology NPP Alumni Seminar feat. Laura Barge!

Event Details

6/1: Astrobiology NPP Alumni Seminar feat. Laura Barge!

Time: June 1, 2016 from 11am to 12pm
Location: Adobe Connect
Website or Map: http://nai.nasa.gov/seminars/…
Event Type: online, seminar
Organized By: Mike Toillion
Latest Activity: Jun 1, 2016

Export to Outlook or iCal (.ics)

Event Description

Chemical Gardens, Chimneys, and Fuel Cells: Simulating Prebiotic Chemistry in Hydrothermal Vents on Ocean Worlds

Presenter: Laura Barge, NASA Jet Propulsion Laboratory
When: June 1, 2016 11AM PDT

Planetary water-rock interfaces generate energy in the form of redox, pH, and thermal gradients, particularly in hydrothermal systems where the reducing, heated vent fluid feeds back into the more oxidizing ocean. Alkaline vents produced by serpentinization have been proposed as a possible location for the emergence of life on the early Earth due to various factors, including the mineral precipitates that resemble inorganic catalysts in enzymes and the presence of electron donors and acceptors in hydrothermal systems (e.g. H2 + CH4 and CO2) that may have been utilized in the earliest metabolisms.

Many of the factors prompting interest in alkaline hydrothermal vents on Earth may also have been present on early Mars, or even presently within icy worlds such as Europa or Enceladus. Of particular importance for possible proto-metabolic reactions in alkaline hydrothermal systems are mineral chimneys that precipitate at the vent fluid / seawater interface. Hydrothermal chimneys are an example of geological chemical gardens – a self-organizing non-equilibrium process that forms complex structures fueled by steep concentration gradients across the reaction-precipitation zone. Chemical garden and inorganic membrane systems have many properties of interest to the origin of life that can be simulated in the laboratory, for example: they can precipitate metastable catalytic mineral phases; the chemical garden structure can act as a flow-through chemical reactor and concentrator; and they can even generate electrical energy from the trans-membrane gradients and drive redox reactions.

In this talk I will give an overview of how we use chemical gardens to simulate far-from-equilibrium geochemical systems such as vents, and future directions for using electrochemical / fuel cell techniques to characterize prebiotic potential and habitability in seafloor systems.

Comment Wall

Comment

RSVP for 6/1: Astrobiology NPP Alumni Seminar feat. Laura Barge! to add comments!

Join SAGANet

Attending (9)

Photos

  • Add Photos
  • View All

Blog Posts

The 5th Mexican School of Astrobiology

Posted by Tardigrelda on June 24, 2019 at 1:00pm 0 Comments

I am really glad to invite everyone to the next Mexican School of Astrobiology (aka EMA) which is this August.

¡Anímate a participar en la 5ta Escuela Mexicana de…

Continue

A consortium of representatives of European Research Organisations has taken the initiative to create a virtual institute named the “European Astrobiology Institute” (EAI) with the ambition of enabli…

Posted by Wolf D. Geppert on February 24, 2019 at 1:33am 0 Comments

A consortium of representatives of European Research Organisations has taken the initiative to create a virtual institute named the “European Astrobiology Institute” (EAI) with the ambition of enabling Europe to emerge as a key player in Astrobiology and to…

Continue

AbSciCon session on life in high salt habitats

Posted by Jeff Bowman on December 14, 2018 at 8:12am 0 Comments

Abstract submissions are open for AbSciCon 2019!  You can check out the full selection of sessions here, however, I'd like to draw your attention toward the session Salty Goodness: Understanding life, biosignature…

Continue

vemala Network

Posted by Apit Supriatna on October 7, 2018 at 1:07am 0 Comments

Vemala.com merupakan situs yang membahas seputar gaya hidup, dengan berbagai macam informasi kesehatan, olahraga, Fitness, review, kecantikan, relationship,Lifestile, Tips kehamilan,Fashion dan lain sebagainya.

Videos

  • Add Videos
  • View All

Forum

Ask your questions here!

Started by Gina Riggio in SAGANet Discussions. Last reply by Dimitra Atri on Monday. 68 Replies

If you are trying to ask a question live during Ask an Astrobiologist, please do so in the main chatroom at the bottom of the screen! You can also ask on twitter…Continue

Internship in Astrobiology

Started by Eva Zanditenas in Jobs / Post-docs / Other opportunities Oct 9. 0 Replies

Hi, My name is Eva Zanditenas, I am in my final year of biotechnology (in Paris) and I looking for an internship of six months to conclude my studies.   I am passionate about astrobiology, and it is…Continue

Tags: internship

European Astrobilogy Institute now on Twitter !

Started by Wolf D. Geppert in SAGANet Community Sep 24. 0 Replies

ear All,The European Astrobiology Institute is now on Twitter : @EAIastrobiologyIf you are interested: Follow us!If you like a tweet: Like us!If you find a tweet interesting: Retweet!If you want us…Continue

Spiritual connection

Started by MOHIT Kakkar in The Cutting-Edge of Astrobiology Jun 15. 0 Replies

Hi pls answer my spiritual questions.Continue

© 2019   Blue Marble Space, a non-profit organization committed to science and science outreach.   Powered by

Badges  |  Report an Issue  |  Terms of Service