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Planetary Atmospheres Initiative

The TAP Planetary Atmospheres Initiative brings together researchers from across the University of Arizona working to understand the physical and chemical processes that govern planetary and exoplanetary atmospheres. Key motivating questions include: (1) How can the composition of a planetary atmosphere serve as a probe of the world's formation history? (2) How do atmospheric processes create signatures that are accessible to remote characterization? (3) Are there habitable or even inhabited worlds beyond Earth, and could we discriminate these from all other types of planets?

Join the Planetary Atmospheres Mailing List

For meeting times and locations contact Exoplanet Atmosphere Initiative Leads Brittany Miles, Sukrit Ranjan, or Tyler Robinson.

Upcoming Planetary Atmospheres Initiative Lectures

Fall 2025 Lectures

Caroline Piaulet-Ghorayeb, University of Chicago

Visit Dates:  October 27-30, 2025

Planetary Atmospheres Initiative Lecture

October 27, 2025

Title:  Beyond Earth 2.0: charting paths to habitable worlds with JWST


Upcoming Planetary Atmospheres Computational Workshops

Fall 2025 Planetary Atmospheres Computational Workshops

Caroline Piaulet-Ghorayeb, University of Chicago

Planetary Atmospheres Computational Workshop

Title: Introduction to MELT and SMINT: Modeling of Small-planet Interior Compositions.

Date: Oct 28, 2025

Affiliated Research Groups

Brown Dwarf W1935 (Artist Concept)

The Miles Research Group

The Miles group uses observations to understand the composition, structure, and weather activity of exoplanets. We develop novel instruments to directly image and characterize Earth-like planets.

Ranjan Research Group Image

The Ranjan Research Group

The Ranjan group approaches questions of planetary atmospheres through the lens of UV-driven processes such as photochemistry and escape.


 

Earth viewed in high-energy ultraviolet radiation

The Robinson Research Group

The Habitability, Atmospheres, and Biosignatures Laboratory (HABLab) uses theoretical models to understand planetary climate, remote sensing, and detectability of life-related processes for exoplanets.