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AST112: Introduction to Stars, Galaxies, and Cosmology – 4 credits

Introduction to astronomy for the non-science major. Structure and evolution of stars; supernovae, black holes, and quasars; nebulae; star clusters; galaxies; cosmology, including the birth and death of the universe. Note: Note that AST111 is not a prerequisite for this course. Prerequisites: A grade of C or better in MAT092 or higher, or satisfactory district placement.

General Education Designations: Natural Sciences [NSI], Natural Sciences Quantitative [SQ]

Class# Location Delivery Dates Days Times Instructors Availability
17074
Mesa: Dobson Campus
PS 105 - Astronomy Laboratory
In Person
8/24 – 12/18
Fall 2026
M,W
10:30AM – 11:45AM
  • K. Healy
Closed
No seats available
  • Costs include AST Course Fee: $5.00
  • Zero-Textbook-Cost Class: The total cost of required online instructional materials for this "Z Class" is $0.
    Class 17074 Students get hands-on experience doing an original research assignment.
    Note that AST112 is not a prerequisite for other AST courses, AST106, 111, and 112 cover three areas of study in astronomy. These courses can be taken in any order or combination. AST106 and AST111 are not prerequisites of this course.
    Lab notes: Students enrolling in class 17074 must also enroll in the following lab:
    Class 17075 held Mon/Wed from 12:00PM to 1:15PM at PS 105 (K. Healy) (CLOSED/FULL)
  • No books listed at the bookstore, contact instructor
16271
Mesa
Online Course
Online
10/19 – 12/18
Fall 2026
N/A
N/A
  • J. Hester
Closed
No seats available
  • Zero-Textbook-Cost Class: The total cost of required online instructional materials for this "Z Class" is $0.
    Class 16271 This class may include optional synchronous components such as review sessions, office hours, etc.. Coursework must be completed according to deadlines. Students are required to submit an initial assignment due within the first few days of class. Students are required to have access to a computer and Internet. A webcam and microphone are recommended. A mobile device may not be sufficient for all course content.
    Note that AST112 is not a prerequisite for other AST courses, AST106, 111, and 112 cover three areas of study in astronomy. These courses can be taken in any order or combination. AST106 and AST111 are not prerequisites of this course.
    Lab notes: Students enrolling in class 16271 must also enroll in the following lab:
    Class 16340 held Online (J. Hester) (CLOSED/FULL)
  • No books listed at the bookstore, contact instructor