Modeling of Giant Impacts Solar System

Organization

National Aeronautics and Space Administration (NASA)

0334-NPP-NOV
26-GSFC-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 at 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.

In the past two decades, increased awareness and knowledge of the role of giant impacts throughout the solar system has led to a reinterpretation of our understanding of planetary surfaces and orbits. Examples include the origin of the Moon through recondensation of material from a giant impact of a Mars‑sized body (Theia) on the Earth; origin of the Martian hemispheric dichotomy;

and even the rings and small moons of Saturn.

However, much work remains to be done to fully understand these mechanisms and test against competing hypotheses. This project solicits proposals for modeling studies to better explain giant impact events throughout the solar system, with important implications for solar system formation and evolution, origins and sustainment of life, and future planetary protection.

Planetary Science

Conor Nixon

Applicants must meet the following eligibility criteria:

• U.S. Citizens
• U.S. Lawful Permanent Residents (LPR)
• Foreign Nationals eligible for an Exchange Visitor J‑1 visa status
• Applicants for LPR, asylees, or refugees in the U.S. at the time of application with a valid EAD card and I‑485 or I‑589 forms in pending status

Citizens from designated countries will not be accepted unless they are legal permanent residents of the United States. A complete list of designated countries can be found at https://(Use the "Apply for this Job" box below)..

• Prior experience in 3D hydrocode modeling of impacts, explosions, or related areas.
• A PhD in physics, mathematics, or related subject is required.
• Ability to work independently with strong written and oral English skills.
• Proficiency as a presenter and communicator, and comfort working in a collaborative team environment at NASA.

• Doctoral Degree.