Planetary Sciences Group
University of Central Florida
The UCF Planetary Sciences Group uses spacecraft, telescopes, meteorites, moon rocks, laboratories, 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 |
|---|---|---|---|
| Keown, L. E. Mc; Diniega, S.; Poston, M. J.; and 8 coauthors | CO |
May 2026 | Icarus 449, 116938 |
| Richardson, Mark I.; Ansari, Samaneh; Fan, Bowen; and 7 coauthors | Atmospheric Dynamics of IR-Active Particles Released From Mars’ Surface | Mar 2026 | Geophysical Research Letters 53, e2025GL121051 |
| Dapremont, Angela M.; Klima, Rachel L.; Wilk, Kierra A.; and 11 coauthors | Visible-Shortwave Infrared (VSWIR) Spectral Parameters for the Lunar Trailblazer High-Resolution Volatiles and Minerals Moon Mapper (HVM3) | Mar 2026 | Earth and Space Science 13, e2025EA004557 |
| Lisse, C. M.; Wolk, S. J.; Snios, B.; and 24 coauthors | First Resolution of a Main-sequence G star’s Astrosphere Using Chandra | Mar 2026 | The Astrophysical Journal 999, 125 |
| Kilic, Y.; Braga-Ribas, F.; Pereira, C. L.; and 81 coauthors | Constraining the size, shape, and albedo of the large trans-Neptunian object (28978) Ixion with multi-chord stellar occultations | Mar 2026 | Astronomy and Astrophysics 707, A70 |
| Vilchez, A.; Duffard, R.; Spagnuolo, M. G.; and 1 coauthor | Comparison of hydration bands between the spectra of carbonaceous chondrites and asteroids: perspectives for mineralogy on Main-Belt Asteroids surfaces | Feb 2026 | Monthly Notices of the Royal Astronomical Society 546, staf2171 |
| Burchell, M. J.; Ogliore, R. C.; Wozniakiewicz, P. J. | Sampling the volcanic plumes at Io: Impact speeds and shock conditions | Feb 2026 | Meteoritics and Planetary Science 61, 241 |
| Oliveros-Gomez, Natalia; Manjavacas, Elena; Karalidi, Theodora; and 17 coauthors | The JWST Weather Report from the Nearest Brown Dwarfs. III. Heterogeneous Clouds and Thermochemical Instabilities as Possible Drivers of WISE 1049AB’s Spectroscopic Variability | Feb 2026 | The Astrophysical Journal 997, 136 |
| 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 |
| Greenstreet, Sarah; Li, Zhuofu (Chester); Vavilov, Dmitrii E.; and 68 coauthors | Lightcurves, Rotation Periods, and Colors for Vera C. Rubin Observatory’s First Asteroid Discoveries | Jan 2026 | The Astrophysical Journal 996, L33 |
Query returned 1070 total number of records, 10 are shown.
