ASTR 140Galaxies
Astronomy · 4 units · Undergraduate upper division (100-199)
Designed for upper-division Astrophysics and Physics majors. Focus on basic unit of structure in universe: galaxies. Consideration of physics governing their structure and evolution, and how galaxy population has evolved over history of universe. Other topics include Milky Way, stellar dynamics, active galactic nuclei, and galaxy clusters.
P/NP or letter grading.
When it runs
- Spring 2026
- Spring 2027
Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.
Requisites
Official UCLA wording
Requisites: courses 115, 117.
Requires
Everything that has to come before this course, not just the courses named in the requisite above.
ASTR 140
- ASTR 115Introduction to Galactic Astronomy
- ASTR 117Introduction to Extragalactic Astrophysics
- PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)
- MATH 32BCalculus of Several Variables
2 direct requisites. The whole upstream is here — 23 courses over 3 levels. Every course here opens its own tree.
Unlocks
What this course is a requisite for, and what those courses lead to in turn.
No course in the catalog lists this as a requisite.