Isotopic Characterization of Presolar Grains to Discern Origins and Histories

Organization

National Aeronautics and Space Administration (NASA)

0016-NPP-NOV
26-JSC-Planet Sci

11/1/2026 6:00:59 PM Eastern Time Zone

The NASA Postdoctoral Program (NPP) offers unique research opportunities to highly‑talented scientists to engage in ongoing NASA research projects at a NASA Center, NASA Headquarters, or a NASA‑affiliated research institute. These one‑to‑three‑year fellowships are competitive and are designed to advance NASA’s missions in space science, Earth science, aeronautics, space operations, exploration systems, and astrobiology.

• Conduct multi‑element isotopic analysis of presolar grains using the NanoSIMS 50L instrument.
• Interpret data within the context of astrophysical models.
• Coordinate NanoSIMS analyses with focused ion beam (FIB)–assisted transmission electron microscope (TEM) mineral analyses of presolar grains.
• Utilize additional instrumentation in the Astromaterials Research and Exploration Science (ARES) division, including scanning electron microscopes, electron microprobe, Raman microprobe, X‑ray computed tomography (CT) scanner, and various spectrometers.
• Prepare and present research findings in scientific publications and conferences.

Johnson Space Center, Houston, Texas

Planetary Science

• Ann Nguyen – lan-anh.n.nguyen –

• Doctoral degree.
• U.S. Citizens, U.S. Lawful Permanent Residents (LPR), Foreign Nationals eligible for an Exchange Visitor J‑1 visa, or applicants for LPR, asylees, or refugees in the U.S. possessing a valid EAD card and with pending I‑485 or I‑589 forms.

Mikeala – Please email npp