shared w/David Weinberg

For essential contributions to facilitating, guiding, and participating in transformative science resulting from modern large-scale astronomical surveys at optical wavelengths, in particular the Sloan Digital Sky Survey.

For his inspired work on providing, maintaining, and supporting the use of open-source stellar-evolution codes that have seeped into the foundation of research and education efforts and have given rise to an immense amount of new research across multiple subfields of astrophysics.

For his national and international impact through his outstanding teaching of thousands of students at his home university and, via the web, worldwide; his countless talks and articles about astronomy and astronomy education over the years; his influential development of several strands of astronomy education research with his group at the University of Arizona; his excellent writing for nonscientists in his introductory textbooks, his popular books, his Teach Astronomy website, and other web-based learning tools; and his generosity in training so many others in our community to think more clearly about education and to become better teachers themselves.

For her leading contributions that have dramatically advanced our understanding of the formation rate, composition, and evolution of planets around low-mass M dwarf stars.

shared w/Robert Lupton

For essential contributions to facilitating, guiding, and participating in transformative science resulting from modern large-scale astronomical surveys at optical wavelengths, in particular the Sloan Digital Sky Survey.

For his pioneering work on extragalactic magnetic fields using infrared polarization. 

For her pioneering research on the structure, composition, and dynamics of exoplanet atmospheres. Her efforts in combining theoretical models with precise observations from space-based telescopes have laid a foundation for comparative planetology beyond the solar system. She has also been a leader in the exoplanet community, spearheading initiatives for large projects with the Hubble and Webb telescopes.

For lifelong contributions to our understanding of molecular gas and star formation in the Milky Way and other galaxies, for visionary leadership, and for inspiring generations of early career astronomers.

For her important contributions on planet formation and dynamics, particularly on hot Jupiter exoplanets and the connection between planetary composition and orbital structure.