Education and Outreach

Selection of NASA Postdoctoral Program Astrobiology Fellows

By Keith Cowing
April 16, 2012

The NASA Astrobiology Program is pleased to announce the selection of four new NASA Postdoctoral Fellows:

Jose Aponte
Advisor: Jamie Elsila-Cook (NAI Goddard Center for Astrobiology Team)
Topic: “Assessment of Isotopic Ratios and Enantiomeric Excess of Neutral Compounds and Amines Found on Carbonaceous Chondrites”

Tammy Campbell
Advisor: Ramanarayanan Krishnamurthy (Exobiology: Prebiotic Evolution)
Topic: “Non-Enzymatic Glycosylation of DNA Nucleobases to Develop Potentially Prebiotic Nucleic Acid Alternatives”

Natascha Riedinger
Advisor: Timothy Lyons (NAI Arizona State University Team)
Topic: “The Fate of Molybdenum and Its Isotopes in Deep, Oxide-rich Marine Sediments: Implications for the Mo Paleoproxy and Oxygen in the Ancient Ocean”

Erik Sperling
Advisor: Andrew Knoll (NAI MIT Team)
Topic: “Reconciling Ecological and Geochemical Triggers of the Cambrian Radiation”

More information about the NPP can be found at

Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻