Haleigh Nyberg

I map how a planet's tilt, spin, and star shape its ability to host an origin of life.

NSF Graduate Research Fellow · Zonta Amelia Earhart Fellow

PhD Candidate · Computational Astrobiology · Purdue

I map how a planet's tilt, spin, and star shape its ability to host an origin of life.

NSF Graduate Research Fellow working with Dr. Stephanie Olson. I run ExoPlaSim simulations across obliquity, rotation rate, and stellar type to track wet-dry cycling in shoreline ponds (the conditions RNA precursors need to accumulate).

About

Haleigh Nyberg

A planet that holds liquid water can sustain life. Whether it can start one is a different question, and it is the question my doctoral work asks: which planetary conditions are most conducive to an origin of life, and how that knowledge can point future missions like NASA's Habitable Worlds Observatory and ESA's PLATO toward the targets most likely to have actually originated one.

In Dr. Stephanie Olson's PHAB Lab at Purdue, I use ExoPlaSim and a custom post-processing pipeline to simulate volcanic island worlds across obliquity, rotation rate, and stellar host, tracking the wet-dry cycling and prebiotic-organic accumulation that prefigure abiogenesis. The deliverable is an Origin of Life Index (a pre-computed ranking of exoplanet targets by their likelihood of originating, not just sustaining, life).

  • NSF Graduate Research Fellow
  • Zonta Amelia Earhart Fellow
  • Ross Fellowship
  • Summa Cum Laude
  • NASA Space Grant (INSGC)
  • AGU Invited Speaker (2025)
  • Session Chair, Goldschmidt 2026
Gateway visualization team — Spring 2025 cohort at Purdue
Artemis Gateway visualization team, Spring 2025 (Purdue Data Mine, Barrios Technology, NASA Johnson)
Haleigh beside an ISS module mockup and mission-patch wall at a NASA facility
ISS module mockup & mission-patch wall, NASA facility

Alongside the science, I've spent two semesters as scrum master for 16-member, multi-university teams developing an Unreal Engine visualization and mission-planning tool for NASA's Artemis Gateway, in partnership with Barrios Technology and Johnson Space Center. It turns a real spacecraft and its live EVA procedures into something an astronaut can rehearse inside before flying. I also co-founded PALLAS, designing the front-end of a platform that connects artists with scientists for professional collaboration.

Haleigh presenting at AGU 2025
AGU 2025: "Planetary Obliquity and Origin of Life Potential" (invited)
Haleigh presenting the PALLAS poster at AGU 2025
PALLAS poster at AGU 2025
Haleigh presenting the PALLAS poster at AbSciCon 2026
PALLAS poster at AbSciCon 2026

As an NSF Graduate Research Fellow, I serve as Executive Secretary on NASA's Habitable Worlds and Exoplanet Research Program review panels, peer-review for the Planetary Science Journal, and coach incoming GRFP applicants through Purdue's Office of Graduate School and Professional Studies after winning my own.

Selected Projects

Resume / CV

PDF preview available on larger screens.

Research

Computational Astrobiology · ExoPlaSim

For a planet to host life, it must first become the origin of that life. I run ExoPlaSim (a 3D general circulation model) across a parameter space of obliquity, rotation rate, star type, and surface configuration to figure out which planets allow wet-dry cycling in warm little ponds. The pond model then tracks whether precipitation, evaporation, and haze deposition let RNA precursors actually accumulate.

Chapter 1 (in prep for PNAS): wet-dry cycling distribution is heavily dependent on incoming stellar flux distribution, with global permissiveness at higher obliquity. Organic concentrations heavily depend on the deposition of haze and the ability for warm little ponds to retain organic inventories throughout wet phases. Over 1,500 simulations so far, spanning all scenarios with a combined land-ocean-space-substellar map set.

Warm little pond in wet phase: rain, HCN aqueous chemistry, meteorite delivery, seepage
Wet phase (precipitation delivers organics)
Warm little pond in dry phase: UV photolysis, evaporative concentration
Dry phase (UV drives polymerization)
Dissertation overview: C1 Obliquity, C2 Rotation, C3 Host Star
Fig. 1: Dissertation overview of obliquity, rotation, and host star effects on wet-dry cycling
Hadley cell circulation and wet-dry zone distribution across latitudes for 24hr modern Earth rotation
Fig. 2: Atmospheric circulation drives precipitation patterns that control pond wet-dry cycling
Two surface-temperature maps of the same Earth-like world: a 0-degree-tilt planet warm in an equatorial band, a 90-degree-tilt planet warm at its summer pole
Axial tilt rewrites a planet's climate. Two ExoPlaSim runs of the same Earth-like world (no tilt on the left, a steep 90° tilt on the right, at northern summer). A flat planet warms in a band at the equator, but a tilted one turns its summer pole into the hottest place on the map, and that seasonal swing is what drives shallow ponds to fill and dry.

The island you see here is what I simulate (a volcanic hotspot where sea-land breeze circulation drives evaporation and precipitation through shoreline ponds).

Full CV (PDF) · Google Scholar · ORCID · Olson Lab →

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