"I would recommend that people look at what they want to be in the future then make the decision of what track to choose either physics or interdisciplinary emphasis." (current college student in Astrophysics)
ASTR 1000 - The Solar System
ASTR 1010 - Introductory Astronomy: The Solar System w/Lab
ASTR 1020 - Introductory Astronomy: Stars & Galaxies w/Recitation
ASTR 1030 - Accelerated Introductory Astronomy 1
ASTR 1040 - Accelerated Introductory Astronomy 2
ASTR 1200 - Stars and Galaxies
ASTR 2000 - Ancient Astronomies of the World
ASTR 2010 - Modern Cosmology-Origin and Structure of the Universe
ASTR 2020 - Space Astronomy and Exploration
ASTR 2030 - Black Holes
ASTR 2040 - The Search for Life in the Universe
ASTR 2050 - The Sun and Society: Living with an Active Star
ASTR 2100 - Fundamental Concepts in Astrophysics
ASTR 2500 - Gateway to Space
ASTR 2600 - Introduction to Scientific Programming
ASTR 2840 - Independent Study
ASTR 3300 - Extraterrestrial Life
ASTR 3400 - Research Methods in Astronomy
ASTR 3510 - Observations and Instrumentation 1
ASTR 3520 - Observations and Instrumentation 2
ASTR 3560 - Astronomical Instrumentation Laboratory
ASTR 2600 - Introduction to Scientific Programming
ASTR 2840 - Independent Study
ASTR 3300 - Extraterrestrial Life
ASTR 3400 - Research Methods in Astronomy
ASTR 3510 - Observations and Instrumentation 1
ASTR 3520 - Observations and Instrumentation 2
ASTR 3560 - Astronomical Instrumentation Laboratory
ASTR 3710 - Formation & Dynamics of Planetary Systems
ASTR 3720 - Planets and Their Atmospheres
ASTR 3730 - Astrophysics 1 - Stellar and Interstellar
ASTR 3740 - Cosmology and Relativity
ASTR 3750 - Planets, Moons, and Rings
ASTR 3760 - Solar and Space Physics
ASTR 3800 - Introduction to Scientific Data Analysis and Computing
ASTR 3830 - Astrophysics 2 - Galactic and Extragalactic
ASTR 3730 (3) - Planets and Planetary Systems
ASTR 3750 (3) - Cosmology and Structure Formation
ASTR 3800 (3) - Astronomical Instrumentation
ASTR 4330 (3) - Cosmochemistry
ASTR 4500 (1-3) - Special Topics in Astrophysical and Planetary Sciences
ASTR 4800 (3) - Space Science: Practice and Policy
ASTR 4840 (1-3) - Independent Study
ASTR 4841 (1-3) - Independent Study
These are all the courses you have to take during your undergrad at the University of Colorado-Boulder.