Why study astronomy?

Because understanding the physical universe starts here.

Undergraduate Programs

Astronomy programs are offered through the Department of Physics and Astronomy. The astronomy curriculum offers undergraduates a survey of modern astronomy and an introduction to physical science, gives science and engineering students an introduction to astronomy and astrophysics, and prepares students majoring in astronomy for graduate study in astronomy or related fields.

Courses for Nonmajors

ASTR 191 surveys a wide range of contemporary astronomy topics while ASTR 293 discusses a shorter list of astrophysically extreme objects in greater detail; both courses require eligibility for MATH 101. ASTR 394 is open to students with previous coursework in astronomy, geology or biology; ASTR 391 offers an introduction to physical astronomy at a calculus-based level.

Undergraduate Admission

Admission to KU

All students applying for admission must send high school and college transcripts to the Office of Admissions. Unless they are college transfer students with at least 24 hours of credit, prospective students must send ACT or SAT scores to the Office of Admissions. Prospective first-year students should be aware that KU has qualified admission requirements that all new first-year students must meet to be admitted. Consult the Office of Admissions for application deadlines and specific admission requirements.

Visit the Office of International Student and Scholar Services for information about international admissions.

Students considering transferring to KU may see how their college-level course work will transfer on the Office of Admissions website.

Admission to the College of Liberal Arts and Sciences

Admission to the College is a different process from admission to a major field. Some CLAS departments have admission requirements. See individual department/program sections for departmental admission requirements.


Students considering a major in astronomy should confer early with a departmental representative about the selection of courses. The B.A. degree is appropriate for students who want a general education in astronomy as part of a broadly structured liberal education. The B.S. is a more specialized program with a substantial emphasis on physics content as well as astronomy. It provides preparation for a professional career or graduate work in astronomy, astrophysics, or related fields. A total of 120 credit hours is required for graduation.

First- and Second-Year Preparation

All major programs in physics and astronomy share requirements in basic physics and mathematics including PHSX 150, a seminar course for majors. Completion of MATH 125 and MATH 126 in the first year allows students to start calculus-based physics foundation courses (PHSX 211 and PHSX 216 or PHSX 213, followed by PHSX 212 and PHSX 236 or PHSX 214) by the second semester. Majors are encouraged to take PHSX 213 and PHSX 214, the honors versions of PHSX 211/PHSX 216 and PHSX 212 /PHSX 236. Students should take these courses and ASTR 391 in their first two years. B.S. astronomy majors normally complete additional course work in mathematics (MATH 127, MATH 290, and MATH 320), as well as PHSX 313 and PHSX 316, in the second year.

Requirements for the B.S. Degree in Astronomy

All students pursuing the Bachelor of Science in Astronomy must complete the KU Core requirements in addition to the degree and major requirements. For details regarding the KU Core requirements, please see the KU Core section of the catalog.

General science requirements (24.5-36.5)
Majors must complete courses as specified in each of the following areas. Majors are advised to take honors courses when eligible. These hours do not contribute to the minimum number of hours required for the major.
Computing and Programming. Satisfied by one of the following:
EECS 138Introduction to Computing: _____3
EECS 168Programming I4
Calculus I. Satisfied by one of the following:
Or equivalent
MATH 125Calculus I4
or MATH 145 Calculus I, Honors
Calculus II. Satisfied by one of the following:
Or equivalent
MATH 126Calculus II4
or MATH 146 Calculus II, Honors
Seminar in Physics, Astronomy, & Engineering Physics. Satisfied by the following:
PHSX 150Seminar in Physics, Astronomy and Engineering Physics0.5
General Physics I. Satisfied by one of the following:
PHSX 211
  & PHSX 216
General Physics I
   and General Physics I Laboratory
PHSX 213General Physics I Honors1-5
General Physics II. Satisfied by one of the following:
PHSX 212
  & PHSX 236
General Physics II
   and General Physics II Laboratory
PHSX 214General Physics II Honors1-4
Foundations of Chemistry I. Satisfied by one of the following:
CHEM 130General Chemistry I5
Foundations of Chemistry I, Honors
Advanced Mathematics Core Knowledge and Skills (12)
Vector Calculus. Satisfied by the following:
MATH 127Calculus III4
or MATH 147 Calculus III, Honors
Elementary Linear Algebra. Satisfied by the following:
MATH 290Elementary Linear Algebra2
Elementary Differential Equations. Satisfied by the following:
MATH 320Elementary Differential Equations3
Math Elective. Satisfied by one of the following:3
Mathematical Physics
Mathematical Methods in Physical Sciences
Applied Mathematical Statistics I
Mathematical Models
Introductory Modern Algebra
Numerical Methods
Linear Algebra
Mathematical Theory of Statistics
Complex Variable and Applications
Applied Partial Differential Equations
Calculus of Variations and Integral Equations
Geometry I
Geometry II
any 700-level MATH lecture course except MATH 701 and MATH 715.
Astronomy Requirements for Major (18-21)
Majors must complete the following seven courses:
ASTR 391Physical Astronomy, Honors3
ASTR 591Stellar Astronomy3
ASTR 592Galactic and Extragalactic Astronomy3
ASTR 596Observational Astrophysics2
ASTR 691Astrophysics I3
ASTR 692Astrophysics II3
ASTR 503Undergraduate Research1-4
Physics Core Knowledge and Skills (30)
Majors must complete courses as indicated in the following areas:
General Physics III. Satisfied by the following:
PHSX 313General Physics III3
Intermediate Physics Lab. Satisfied by the following:
PHSX 316Intermediate Physics Laboratory I1
Introductory Quantum Mechanics. Satisfied by the following:
PHSX 511Introductory Quantum Mechanics3
Physical Measurements or Electronic Circuit Measurement and Design. Satisfied by one of the following:
PHSX 516Physical Measurements4
PHSX 536Electronic Circuit Measurement and Design4
Mechanics I. Satisfied by the following:
PHSX 521Mechanics I3
Electricity and Magnetism. Satisfied by the following:
PHSX 531Electricity and Magnetism3
Thermal Physics. Satisfied by the following:
PHSX 671Thermal Physics3
Physics Elective. Satisfied by any PHSX lecture or laboratory course numbered 500 or higher (PHSX 693 recommended) (with the exception of PHSX 594), including:3
ASTR 792Topics in Advanced Astrophyics3
Space Plasma Physics
Space Plasma Physics
Gravitation and Cosmology (recommended)

Major Hours & Major GPA

While completing all required courses (above), majors must also meet each of the following hour and grade-point average minimum standards:

Major Hours
Satisfied by 30 hours of major courses.

Major Hours in Residence
Satisfied by a minimum of 15 hours of KU resident credit in the major. 

Major Junior/Senior(300+) Hours
Satisfied by a minimum of 12 hours from junior/senior courses (300+) in the major.

Major Junior/Senior (300+) Graduation GPA
Satisfied by a minimum of a 2.0 KU GPA in junior/senior courses (300+) in the major. GPA calculations include all junior/senior courses in the field of study including F’s and repeated courses. See the Semester/Cumulative GPA Calculator.

Below is a sample 4-year plan for students pursuing the BS in Astronomy. To view the list of courses approved to fulfill KU Core Goals, please visit the KU Core website

This degree plan assumes students will have the equivalent of MATH 101 or MATH 104 prior to the freshman year, fall semester.

Goal 2.1 Written Communication (First Course, 2 Crs Requried)3Goal 2.1 Written Communication (Second Course, 2 Crs Required)3
Goal 2.2 Oral Communication3Goal 3 Humanities3
CHEM 130 (Goal 1.2 Quantitative Literacy or Goal 3 Natural Science, Major Requirement)5MATH 126 (Major Requirement)4
MATH 125 (Major Requirement)4PHSX 211 (Goal 1.1 Critical Thinking, Goal 1.2 Quantitative Literacy, or Goal 3 Natural Science, Major Requirement)54
PHSX 150 (Major Requirement)40.5PHSX 216 (Major Requirement)51
 15.5 15
EECS 138 or 168 (Major Requirement)3-4Goal 3 Social Science3
MATH 127 (Pre-requisite for Major Requirement)4Goal 4.1 US Diversity3
MATH 223 (Major Requirement)3MATH 320 (Major Requirement)3
MATH 290 (Major Requirement)2ASTR 391 (Major Requirement)43
PHSX 212 (Goal 3 Natural Science, Major Requirement)63PHSX 313 (Goal 3 Natural Science, Major Requirement)3
PHSX 236 (Major Requirement)61PHSX 316 (Major Requirement)1
 16-17 16
ASTR 591 (Major Requirement)2,43Goal 4.2 Global Awareness3
ASTR 596 (Major Requirement)2,42ASTR 592 (Major Requirement)3,43
PHSX 521 (Major Requirement)43PHSX 511 (Major Requirement)43
PHSX 516 or 536 (Major Requirement)4Elective (Total Hours)3
PHSX Math Elective 300+ (Major Requirement)13Elective (Total Hours)3
 15 15
Goal 5 Social Responsibility & Ethics3ASTR 503 (Goal 6 Integration & Creativity, Major Requirement)3-4
ASTR 691 (Major Requirement)43ASTR 692 (Major Requirement)43
PHSX 531 (Major Requirement)43PHSX Elective 500+ (Major Requirement)13
PHSX 671 (Major Requirement)43Elective (Total Hours)3
Elective (Total Hours)3Elective (Total Hours)1
 15 13-14
Total Hours: 120.5-122.5

Refer to the Degree Requirements tab for a list of courses that can fulfill this major requirement.


Offered odd-numbered years.


Offered even-numbered years.


PHSX 150, PHSX 521, ASTR 591, ASTR 596, ASTR 691, PHSX 531, and PHSX 671 are Fall only courses.  
ASTR 391, PHSX 511, ASTR 592, and ASTR 692 are Spring only courses.


 PHSX 213 may be taken in place of the combination of PHSX 211 and PHSX 216.


  PHSX 214 may be taken in place of the combination of PHSX 212 and PHSX 236.

Please note:

All students in the College of Liberal Arts and Sciences are required to complete 120 total hours of which 45 hours must be at the Jr/Sr (300+) level.

The same course cannot be used to fulfill more than one KU Core Goal.

Departmental Honors in Physics and Astronomy

Qualified students earning either a B.A. or a B.S. degree in the College of Liberal Arts and Sciences with a major in astronomy or physics may graduate with Honors in Physics & Astronomy by fulfilling the following requirements: (1) By the end of the candidate's final semester, achieve a minimum GPA of 3.25 overall and 3.5 in the major, in all courses taken in residence and elsewhere; and (2) Complete at least 24 semester hours of astronomy and physics courses numbered 500 or above, including undergraduate research represented by two hours of credit in ASTR 597, ASTR 503, PHSX 501 or PHSX 503. A grade of B or better must be earned in one of the following: ASTR 597, ASTR 503, PHSX 501 or PHSX 503.  In addition, all our all of our department’s honors requirements include student research, for which results shall be presented in at least one of the following forms: (1) a written research summary, read by 3 faculty members in physics and astronomy or related fields or authorship on a peer-reviewed manuscript;  (2) a research-based oral presentation at an appropriate venue (e.g., Undergraduate Research symposium, a presentation in an advanced department seminar class, a discipline specific meeting); or (3) presentation of a poster at an appropriate venue.  A student who plans to graduate with honors in physics and astronomy must file a Declaration of Intent Form with the Departmental Honors Coordinator, preferably during his/her junior year but in any case no later than enrollment for the final undergraduate semester.​