Rate My Professor Ian Crossfield

Crossfield received his Ph.D. in Astrophysics from the University of California, Los Angeles in 2012 with a dissertation titled 'Infrared Observations of Exoplanet Atmospheres,' an M.S. in Astrophysics from UCLA in 2009, and a B.S. in Physics magna cum laude from the University of California, Irvine in 2004. His career trajectory includes Assistant Professor at the Massachusetts Institute of Technology (2017-2020), NASA Sagan Postdoctoral Fellow at the Jet Propulsion Laboratory (2014-2016) and Max Planck Institute for Astronomy (2012-2014), and earlier roles at UCLA and JPL. Among his honors are the NASA Sagan Fellowship (2014), Kavli Frontiers of Science Fellowship (2015), AAS Rodger Doxsey Prize (2013), two AAS Chambliss Student Achievement Awards (2009, 2010), and selection as Chair of the NASA Exoplanet Program Analysis Group Executive Committee (2025 onward). Key publications include 'A Nearby M Star With Three Transiting Super-Earths Discovered by K2' (ApJ, 2015), 'Observations of Exoplanet Atmospheres' (PASP, 2015), 'GJ 1252b: A Hot Terrestrial Super-Earth with No Atmosphere' (ApJL, 2022), 'Volatile-to-sulfur Ratios Can Recover a Gas Giant’s Accretion History' (ApJL, 2023), and 'Mapping the SO2 Shoreline in Gas Giant Exoplanets' (AJ, 2025). His work has advanced exoplanet atmospheric studies and mentored students earning NSF Graduate Research Fellowships.