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Bachelor of Science in Astrophysics California Institute of Technology




Course info


The Evolving Universe : 9 units (3-3-3); third term; This course is intended primarily for freshmen not expecting to take more advanced astronomy courses and will satisfy the menu requirement of the Caltech core curriculum. Introduction to modern astronomy that will illustrate the accomplishments, techniques and scientific methodology of contemporary astronomy. The course will be organized around a set of basic questions, showing how our answers have changed in response to fresh observational discoveries. Topics to be discussed will include telescopes, stars, planets, the search for life elsewhere in the universe, supernovae, pulsars, black holes, galaxies and their active nuclei, and Big Bang cosmology. A field trip to Palomar Observatory will be organized.

FS/Ay 3. Freshman Seminar: Automating Discovering the Universe

Ge/Ay 11 c. Planetary Sciences

Ay 20. Basic Astronomy and the Galaxy

Ay 21. Galaxies and Cosmology

Ay 30. Introduction to Modern Research

Ay 31. Writing in Astronomy

Ay 43. Reading in Astronomy and Astrophysics

Ay 78 abc. Senior Thesis

Ay 101. Physics of Stars

Ay 102. Physics of the Interstellar Medium

Ay/Ph 104. Relativistic Astrophysics

Ay 105. Optical Astronomy Instrumentation Lab

Ay 111 a. Introduction to Current Astrophysics Research

Ge/Ay 117. Statistics and Data Analysis

Ay 119. Astroinformatics

Ay 121. Radiative Processes

Ay 122 abc. Astronomical Measurements and Instrumentation

Ay 123. Structure and Evolution of Stars

Ay 124. Structure and Dynamics of Galaxies

Ay 125. High-Energy Astrophysics

Ay 126. Interstellar and Intergalactic Medium

Ay 127. Cosmology and Galaxy Formation

Ge/Ay 132. Atomic and Molecular Processes in Astronomy and Planetary Sciences

Ge/Ay 133. The Formation and Evolution of Planetary Systems

Ge/Ay 137. Planetary Physics

Ay 141 abc. Research Conference in Astronomy

Ay 142. Research in Astronomy and Astrophysics

Ay 143. Reading and Independent Study

Ge/Ay 159. Astrobiology

Ay 190. Computational Astrophysics

Ay/Ge 198. Special Topics in the Planetary Sciences

Ay 211. Contemporary Extragalactic Astronomy

Ay 215. Seminar in Theoretical Astrophysics

Ay 218. Extrasolar Planets

Ay 219. Elements in the Universe and Galactic Chemical Evolution

Course options

Here are the different ways in which you can study Bachelor of Science in Astrophysics.

Full Time (4 years)

Tuition fees

$52,506.00 (37,54,967) per year


01-Oct-19, 06-Jan-20, 30-Mar-20, 29-Sep-20


Division of Physics, Mathematics and Astronomy

1200 East California Boulevard,



91125, United States

Entry requirement for international students

International citizens must have completed Caltech's required academic preparation during their secondary school career.

Academic Preparation Requirements

4 years of math (including calculus)
1 year of physics
1 year of chemistry
3 years of English (4 years recommended)
1 year of U.S. history/government (waived for students in schools outside the U.S.)

Additional requirements of our international citizen applicants: TOEFL scores: Required of all international citizens unless 1) your native language is English or 2) you have studied for two or more years in a school where English is the language of instruction.

California Institute of Technology*

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* Please check with your chosen school for the exact entry requirements for your programme.

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