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Department of Astronomy
Astronomy  /  Academics  /  Course Schedule and Weblinks

Course Schedule and Weblinks

Ay 1 Ay 20 Ay 21 Ay 30 Ay 31 Ay 101 Ay 102 Ay 105 Ay/Ge 107 Ay 111 ab Ay 119 Ay 121 Ay 122 abc Ay 123 Ay 124 Ay 125 Ay 126 Ay 127 Ay 141 abc Ay/Ge 198

2026-2027 Astrophysics Course Schedule

For information about all courses, including those not offered this year, please refer to the Caltech Catalog.

Astrophysics 1 - The Evolving Universe

Term Instructor Schedule Location Resources
Spring Dr Djorgovski MWF 2:00 - 2:55 pm TBA TBA

Astrophysics 20 - Basic Astronomy and the Galaxy

Term Instructor Schedule Location Resources
Fall Dr El-Badry TR 1:00 - 2:25 pm Aud CHL Canvas Website

Astrophysics 21 - Galaxies and Cosmology

Term Instructor Schedule Location Resources
Winter Dr Steidel MWF 2:00 - 2:55 pm TBA TBA

Astrophysics 30 - Introduction to Modern Research

Term Instructor Schedule Location Resources
Fall Dr Howard T 7:00 - 8:55 pm 219 CHL Canvas Website

Astrophysics 31 - Writing in Astronomy

Term Instructor Schedule Location Resources
Winter Dr Mawet F 3:00 - 3:55 pm TBA TBA

Astrophysics 101 - Physics of Stars

Term Instructor Schedule Location Resources
Fall Dr Hillenbrand MWF 3:00 - 3:55 pm 219 CHL Canvas Website

Astrophysics 102 - Physics of the Interstellar Medium

Term Instructor Schedule Location Resources
Winter Dr Ravi MWF 1:00 - 1:55 pm TBA TBA

Astrophysics 105 - Optical Astronomy Instrumentation Lab

Term Instructor Schedule Location Resources
Spring Dr Mawet TR 1:00 - 3:55 pm TBA TBA

Astrophysics/Ge 107 - Introduction to Astronomical Observation

Term Instructor Schedule Location Resources
Spring Dr Hillenbrand
Dr de Kleer 		R 10:30 - 11:55 pm TBA TBA

Astrophysics 111 ab - Introduction to Current Astrophysics Research

Term Courses Instructor Schedule Location Resources
Fall Astrophysics 111a Dr Djorgovski F 11:00 - 11:55 am 219 CHL Canvas Website
Winter Astrophysics 111b Dr Djorgovski F 11:00 - 11:55 am TBA TBA

Astrophysics 119 - Astroinformatics

Term Instructors Resources
Spring Dr Djorgovski
Dr Graham
Dr Lombeyda
Dr Mahabal 		TBA

Astrophysics 121 - Radiative Processes

Term Instructors Schedule Location Resources
Fall Dr Phinney TR 10:30 - 11:55 am 219 CHL Canvas Website

Astrophysics 122 abc - Astronomical Measurements and Instrumentation

Term Courses Instructors Schedule Location Resources
Fall Astrophysics 122a Dr Howard
Dr Steidel 		TR 1:00 - 2:25 pm 219 CHL Canvas Website
Spring Astrophysics 122c Dr Hallinan
Dr Kulkarni 		MWF 1:00 - 1:55 pm TBA TBA

Astrophysics 123 - Structure and Evolution of Stars

Term Instructors Schedule Location Resources
Fall Dr Hillenbrand TR 2:30 - 3:55 pm 219 CHL Canvas Website

Astrophysics 124 - Structure and Evolution of Galaxies

Term Instructors Schedule Location Resources
Winter Dr Hopkins
Dr El-Badry 		MW 10:30 - 11:55 am 219 CHL Canvas Website

Astrophysics 125 - High-Energy Astrophysics

Term Instructors Schedule Location Resources
Spring Dr Kasliwal
Dr El-Badry 		TR 1:00 - 2:25 pm 219 CHL Canvas Website

Astrophysics 126 - Interstellar and Intergalactic Medium

Term Instructors Schedule Location Resources
Spring Dr Steidel TR 2:30 - 3:55 pm 219 CHL Canvas Website

Astrophysics 127 - Astrophysical Cosmology

Term Instructors Schedule Location Resources
Spring Dr Kasliwal MW 10:30 - 11:55 am TBA TBA

Astrophysics 141 abc - Research Conference in Astronomy

Term Courses Instructors Schedule Location Resources
Fall Astrophysics 141a Dr Steidel F 4:00 - 4:55 pm 370 CHL Canvas Website
Winter Astrophysics 141b Dr Ravi F 4:00 - 4:55 pm TBA TBA
Spring Astrophysics 141c Dr Hillenbrand F 4:00 - 4:55 pm TBA TBA

Astrophysics/Ge 198 - Special Topics in the Planetary Sciences

Term Instructors Schedule Location Resources
Spring Dr Howard M 10:00 - 11:55 am TBA TBA