Planetary Sciences Group
University of Central Florida
The UCF Planetary Sciences Group uses spacecraft data, images from the world’s largest telescopes, meteorites and moon rocks, experimental techniques, and supercomputers to investigate our own Solar System as well as others around the Galaxy.
Our Research
Atmospheric Evolution and Habitability
Our research group develops atmospheric models of varying complexity (1D, 2D, 3D) to simulate the atmospheres and habitability of the rocky worlds in our solar system (i.e., Venus, Earth, Mars, Titan) and assess their atmospheric/climatic evolution through time.
Dust Dynamics
We are studying the dynamics of dust particles in various solar system environments, including near the lunar surface, asteroid surface, ring systems, and in interplanetary space. This can include motion due to impacts and other disturbances or the motion of charged dust particles in plasma and electric fields.
Exoplanets and Brown Dwarfs
The Exoplanets Group uses space telescopes to reveal the sizes, temperatures, atmospheric properties, and orbits of many planets and brown dwarfs outside our solar system. We develop new theory and models to interpret and understand those data. We also lead several open-source software projects that provide tools for exoplanet research to the astronomical community.
Laboratory Astrophysics
We trace the molecular basis for the evolution of interstellar clouds, the formation of Solar Systems, the incorporation of molecular species into planetary bodies, including comets and meteorites and how these systems evolve in time. Astrochemistry is often a culmination of different fields acting synergistically.
Laboratory Surface Science
We study the physical properties and compositions of the Moon, asteroids, and Mars. The surfaces of these bodies are covered with a fine-grained particulate regolith (or soil) that marks the boundary between internal geologic processes, and the space environment. What are these regoliths made of? How did they form and how have they evolved over time? Most important: what can this tell us about the earliest history of the solar system and the formation of planets?
Microgravity and Planet Formation
Simulations of planet formation that begin with planetesimals have reached a state where the main properties of the solar system are reproduced. Formation of planetesimals themselves remains poorly understood, however. The role of gravitational instabilities in the disk is not known. The outcome of interactions of small aggregates and dust in the presence of the protoplanetary nebula is also poorly understood.
Planetary Rings
We are studying the structure, composition, and evolution of Saturn’s rings through a combination of analysis of data from the Cassini Ultraviolet Imaging Spectrograph (UVIS) and numerical modeling of the rings. We combine multiple stellar occultations to understand the three-dimensional structure of the rings in the same way doctors use CT scans to study the structure of the body. These occultations provide exquisitely detailed maps of the finest structures in the rings which we can then compare to N-body simulations to better understand the dynamics of the rings and their origins.
Small Bodies
“Small bodies” are big on science! Small bodies are comets, asteroids, trans-Neptunian objects (TNOs), Trojans, and Centaurs that are all remnants from the planetary formation era 4 ½ billion years ago. Studying these objects’ behavior and evolution allows us to answer some of the most fundamental questions in astronomy and planetary science.
Academic Programs
Our Latest Papers
| Authors | Title | Published Date | Journal |
|---|---|---|---|
| Souza-Feliciano, A. C.; Rommel, F. L.; Morgado, B. E.; and 1 coauthor | Rotational Light Curve, phase, and visible colors of (52246) Donaldjohanson throughout Lucy Mission Flyby | Jan 2026 | Icarus 443, 116771 |
| Wong, Ian; Holler, Bryan J.; Protopapa, Silvia; and 9 coauthors | JWST/NIRSpec Observations of Salacia-Actaea and Máni: Exploring Population-level Trends among Water-ice-rich Kuiper Belt Objects | Dec 2025 | The Planetary Science Journal 6, 281 |
| Rommel, F. L.; Fernández-Valenzuela, E.; Souza-Feliciano, A. C.; and 2 coauthors | SpinTrace: A Python Library to Study the Physical Properties of Small Bodies Using Survey-based Photometry | Dec 2025 | The Planetary Science Journal 6, 280 |
| Mc Keown, Lauren E.; Lesage, Elodie; Scully, Jennifer E.; and 9 coauthors | Lake Stars as an Earth Analog for Europa’s Manannán Crater Spider Feature | Dec 2025 | The Planetary Science Journal 6, 279 |
| Collyer, Cameron; Fernández-Valenzuela, Estela; Ortiz, Jose Luis; and 8 coauthors | Synchronous Rotation in the (120347) Salacia─Actaea System | Nov 2025 | The Planetary Science Journal 6, 270 |
| Shackelford, A. N.; Donaldson Hanna, K. L.; Gillis-Davis, J. J. | Space Weathering on Carbon-rich Surfaces: Spectral Characterization of Fe-poor Mercury and Carbonaceous Asteroid Analogs | Nov 2025 | The Planetary Science Journal 6, 254 |
| Minocha, Angelina; Ogliore, Ryan C.; Carpenter, Paul K.; and 2 coauthors | Analyses of Apollo 17 Samples Using the Quantitative Microanalysis Explorer: A Web-Based Visualization Platform to Study Optical, Electron, and X-Ray Imaging Data | Nov 2025 | Journal of Geophysical Research (Planets) 130, e2024JE008614 |
| Proudfoot, Benjamin; Nolthenius, Richard; Holler, Bryan J.; and 5 coauthors | Orbital Characterization of a Newly Discovered Small Satellite around Quaoar | Nov 2025 | The Astrophysical Journal 993, L38 |
| Cryan, S.; Brunetto, R.; Guilbert-Lepoutre, A.; and 17 coauthors | Nitrogen-bearing Species on Trans-Neptunian Objects Revealed by JWST/DiSCo-TNOs | Nov 2025 | The Astrophysical Journal 993, 188 |
| Roshi, D. Anish; Poojapriyatharsheni, J.; Sato, Mayumi; and 4 coauthors | Detection of Helium Recombination Lines in the Cygnus X Diffuse Ionized Gas: Implications for Galactic Interstellar Medium Studies | Nov 2025 | The Astronomical Journal 170, 276 |
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