Prof. Briony Horgan

Briony Horgan, PhD
(765) 496-2290

Purdue University
Dept. of Earth, Atmospheric, and Planetary Sciences
550 Stadium Mall Drive,
West Lafayette, IN 47907

Welcome to the Horgan Research Group!

Our group seeks to understand the surface geology of Mars, the Moon, and the Earth through satellite remote sensing, rover missions, field work, and lab work. There are research opportunities in our lab for motivated graduate and undergraduate students. Please email me for more information about potential research topics and projects. Our group welcomes students and researchers regardless of race, religion, gender identification, sexual orientation, age, or disability status. We abide by and strongly support the EAPS Code of Conduct.


Horgan group out in the world! (Left) Lunar and Planetary Science Conference, 2023. (Right) Ultimate Mars 2020 Landing Site Workshop, 2018. Jazzed for Jezero!

Field work 2019-2022
Field work all over the world! (Left) Brad Garcznyski swims with the stromatolites at our Jezero analog in Lake Salda, Turkey in 2019. (middle) Briony, Amanda Rudolph, and Hunter Vannier pose with our Mission Control Space Services rover in central Iceland in 2021, where we studied rover navigation techniques and sedimentary processes. (Right) James Haber grabs a sample of ancient salty and oxidized lake sediments at our Gale crater analog site in southern Utah in 2021.

Posing on palagonite (and moody album cover version) in Red Mountain, San Francisco Volcanic Field, AZ, during the March 2019 EAPS field trip. Left to right: Brad Garczynski (PhD student), Marie McBride (PhD student), Amanda Rudolph (PhD student), James Haber (PhD student), Bryan Howl (undergrad RA), Prakhar Sinha (PhD student), Briony Horgan, Noel Scudder (PhD student).

August 2016

Choose your weapon! August 2016 during fieldwork studying glacial weathering on the Three Sisters volcanic complex. Left to right, top row: Liz Rampe (NASA/JSC), Allie Rutledge (postdoc), Briony Horgan, Marie McBride (PhD student), Sheridan Ackiss (PhD student). Bottom row: Becky Smith (postdoc), Noel Scudder (PhD student).


  • Congratulations to PhD student Hunter Vannier for winning an Indiana Space Grant Fellowship to conduct lab studies of analogs for evolved lunar volcanic rocks!
  • Prof. Horgan was promoted to full professor this year!
  • Congratulations to DOCTOR Prakhar Sinha on completing his PhD and starting his postdoc at MIT!