The APS Department is one of the few programs to combine both astrophysics and planetary science. As a result, we provide a unified view of solar and space sciences, planetary systems (our Solar System and others), stellar and galactic astronomy, and cosmology. We also offer hands-on experience with telescopes, optics, instrumentation, computer image processing and computer modeling. These skills are useful for students wishing to pursue graduate degrees or careers in aerospace, technical or computer industries.

The BS in Astrophysical and Planetary Sciences shares the same foundational astronomy, math and physics course sequences as the BA in Astrophysical and Planetary Sciences, but then focuses on more advanced work in these topics. The BS degree is jointly administered with the Department of Physics and requires substantial upper-division work in this field. Upon graduation with a BS in Astrophysical and Planetary Sciences, students will have solid theoretical and applied training for careers or graduate studies in the space sciences. For more detailed information, visit the department website.

The University of Colorado is recognized as a top university in the exploration and study of space. Our faculty members carry out forefront research in a wide range of disciplines, from theoretical cosmology to finding planets around other stars, from observing cosmic microwave background in Antarctica to building space probes to explore Mars' atmosphere. We offer many types of research opportunities for undergraduates including research-based courses, student positions that support research programs and individual research projects with faculty. Students can apply for funding from the Undergraduate Research Opportunities Program. The Honors Program encourages students to write research theses to qualify for Latin Honors upon graduation.

We encourage all students to explore and share their enthusiasm for science and we support a wide range of extra-curricular activities. These include student groups, the Learning Assistant program, research activities and public outreach. The Sommers-Bausch Observatory and Fiske Planetarium offer opportunities for undergraduate students to become involved.

We offer students the ability to graduate with honors. Students must maintain a minimum GPA and write and defend an honors thesis. More information can be obtained from the APS department office and/or the Honors Council Representative. More general information about the honors thesis is on CU Boulder's Honors Program page.

Requirements 

The Astrophysical and Planetary Sciences - BS physics emphasis option is jointly administered by the APS and Physics Departments. Students in this path are not eligible to pursue a Physics Plan 2 (with Astrophysics focus) major or a physics minor. 

For students aiming for a graduate program in astrophysics or planetary sciences. Similar to Physics Plan 2 (Astrophysics focus), with additional astrophysics instrumentation labs and different electives.

Students must complete a minimum of 23 credits in astrophysical and planetary sciences and a minimum of 28 credits in physics (this must include at least 15 upper-division credits in astronomy and 12 in physics).

Through the required coursework for this path of the major, students will fulfill all 12 credits of the Natural Sciences area of the Gen. Ed. Distribution Requirement, including the lab component, and the QRMS component of the Gen. Ed. Skills Requirement.

For more information, view the Physics Emphasis Flowchart.

Required Courses and Credits

Lower-Division Coursework
The following courses are required:
ASTR 1030
ASTR 1040
Accelerated Introductory Astronomy 1
and Accelerated Introductory Astronomy 2
8
PHYS 1115
PHYS 1125
PHYS 1140
General Physics 1 for Majors
and General Physics 2 for Majors
and Experimental Physics 1 1
9
PHYS 2170
PHYS 2150
Foundations of Modern Physics
and Experimental Physics 2
4
PHYS 2210Classical Mechanics and Mathematical Methods 13
Upper-Division Coursework
The following physics courses are required:
PHYS 3310Principles of Electricity and Magnetism 13
PHYS 3320Principles of Electricity and Magnetism 23
PHYS 3210Classical Mechanics and Mathematical Methods 23
PHYS 3220Quantum Mechanics 13
Select one of the following two astronomy sequences (6-hour minimum):6
Planets and Their Atmospheres
and Planets, Moons, and Rings
Astrophysics 1 - Stellar and Interstellar
and Astrophysics 2 - Galactic and Extragalactic
Astronomy Electives
Select three additional courses from the following or from those sequence courses not used above (9-hour minimum):9
Research Methods in Astronomy
Observations and Instrumentation 1
Observations and Instrumentation 2
Astronomical Instrumentation Laboratory
Formation & Dynamics of Planetary Systems
Cosmology and Relativity
Solar and Space Physics
Introduction to Scientific Data Analysis and Computing
Cosmochemistry
Introduction to Atmospheric Physics
Atmospheric Dynamics
Any ASTR 5000- or 6000-level course with instructor's permission
Total Credit Hours51

Required Ancillary Calculus Coursework

Select one of the following sequence of courses:16-19
Calculus 1 for Engineers
and Calculus 2 for Engineers
and Calculus 3 for Engineers
and Introduction to Differential Equations with Linear Algebra
Calculus 1
and Calculus 2
and Calculus 3
and Introduction to Differential Equations with Linear Algebra
Total Credit Hours16-19

Recommended Physics Electives

Plasma Physics
Thermodynamics and Statistical Mechanics
Quantum Mechanics 2
Nuclear and Particle Physics
Optics

Plan(s) of Study

Physics Emphasis

Plan of Study Grid
Year One
Fall SemesterCredit Hours
ASTR 1030 Accelerated Introductory Astronomy 1 4
PHYS 1115 General Physics 1 for Majors 4
APPM 1350
Calculus 1 for Engineers
or Calculus 1
4-5
Gen Ed Skills course / FYSM 3
 Credit Hours15-16
Spring Semester
ASTR 1040 Accelerated Introductory Astronomy 2 4
APPM 1360
Calculus 2 for Engineers
or Calculus 2
4-5
PHYS 1125 General Physics 2 for Majors 4
PHYS 1140 Experimental Physics 1 1
Gen Ed Distribution/Diversity course 3
 Credit Hours16-17
Year Two
Fall Semester
APPM 2350 Calculus 3 for Engineers 4
PHYS 2170 Foundations of Modern Physics 3
PHYS 2150 Experimental Physics 2 1
Gen Ed Distribution course (example: Social Sciences) 3
Elective 3
 Credit Hours14
Spring Semester
PHYS 2210 Classical Mechanics and Mathematical Methods 1 3
ASTR 2600 Introduction to Scientific Programming (recommended, not required) 3
APPM 2360 Introduction to Differential Equations with Linear Algebra 4
Gen Ed Distribution/Diversity course (example: Social Sciences/US Perspective) 3
Elective 3
 Credit Hours16
Year Three
Fall Semester
ASTR 3730
Astrophysics 1 - Stellar and Interstellar (part one of required sequence)
or Formation & Dynamics of Planetary Systems
3
ASTR 3400 Research Methods in Astronomy (Or Upper Division ASTR-Elective) 3
PHYS 3210 Classical Mechanics and Mathematical Methods 2 3
PHYS 3310 Principles of Electricity and Magnetism 1 3
Gen Ed Distribution course 3
 Credit Hours15
Spring Semester
ASTR 3830
Astrophysics 2 - Galactic and Extragalactic (part two of required sequence)
or Planets and Their Atmospheres
3
PHYS 3220 Quantum Mechanics 1 3
PHYS 3320 Principles of Electricity and Magnetism 2 3
Gen Ed Skills Course (Upper Division Writing) 3
Gen Ed Upper Division course / Elective 3
 Credit Hours15
Year Four
Fall Semester
ASTR Upper-division Elective 3
PHYS 4230 Thermodynamics and Statistical Mechanics (recommended, not required) 3
Gen Ed Course or Upper Division Elective 3
Upper-Division Elective or ASTR Independent Study or Research (would not count for ASTR Upper Division Credit) 3
Upper-Division Elective or ASTR Upper-Division Elective 3
 Credit Hours15
Spring Semester
PHYS 4410 Quantum Mechanics 2 (recommended, not required) 3
ASTR Upper-division Elective or ASTR Independent Study or Research (would not count for ASTR Upper Division Credit) 3
ASTR Upper-division Elective 3
Upper-Division Elective 3
Gen Ed Distribution course 3
 Credit Hours15
 Total Credit Hours121-123

Learning Outcomes

By the completion of the program, students will be able to:

  • Solve quantitative or conceptual problems across the core areas of astrophysics planetary sciences by applying relevant models, theories, and technical approaches.
  • Analyze and evaluate scientific information in order to describe a question at the frontier of an astronomical discipline.
  • Follow scientific practices to conduct experiments, collect and analyze data, report findings in a scientific manner.
  • Present a scientific concept to a variety of audiences including experts and/or the general public
  • Use computational programming to perform quantitative analysis and/or produce data visualizations.