Chair
![David Brain](/aps/sites/default/files/styles/large_square_thumbnail/public/people/dave.brain_1.jpg?itok=JBYYn2SB)
David Brain
Department Chair
Assoc. Chair
![cranmer](/aps/sites/default/files/styles/large_square_thumbnail/public/people/cranmer_pfp_2023_10_25_002.jpg?itok=H6J_7MTk)
Steven Cranmer
Associate Chair for Graduate Studies
![Ann-Marie Madigan](/aps/sites/default/files/styles/large_square_thumbnail/public/people/ann-marie_madigan.jpg?itok=4f0M_2S6)
Ann-Marie Madigan
Associate Chair for Undergraduate Studies
Faculty
![Daniel Dan Baker](/aps/sites/default/files/styles/large_square_thumbnail/public/people/baker_daniel.jpeg?itok=JwaCRqIl)
Daniel Baker
LASP
![MB](/aps/sites/default/files/styles/large_square_thumbnail/public/people/capture1.jpg?itok=ko8ELwmd)
Mitchell Begelman
JILA
![Lauren Blum](/aps/sites/default/files/styles/large_square_thumbnail/public/people/lauren_blum.png?itok=szgKDxxb)
Lauren Blum
LASP
![Andrew Hamilton](/aps/sites/default/files/styles/large_square_thumbnail/public/people/andrew_hamilton_2016_web.jpg?itok=AzcJ0qSr)
Andrew Hamilton
JILA
![Seth Hornstein](/aps/sites/default/files/styles/large_square_thumbnail/public/people/hornstein_seth.jpg?itok=S3W-xMMb)
Seth Hornstein
Observatory Director
![John Keller](/aps/sites/default/files/styles/large_square_thumbnail/public/people/keller_photo_1.jpg?itok=fX0hnm5D)
John Keller
Planetarium Director
![David Malaspina](/aps/sites/default/files/styles/large_square_thumbnail/public/people/dmm_headshot_crop_01.jpg?itok=FQM_6se2)
David Malaspina
Honors Thesis Advising