Stellar and Galactic Astronomy Laboratory Credit Hours: 1 hour. 2 hours lab per week. Astronomy laboratory to accompany Stellar and Galactic Astronomy. Offered fall and spring semester every year. Prerequisite or Corequisite: ASTR 1020 Duplicate Credit: Not open to students with credit in ASTR 1010L Semester Offered: Fall Spring Course Type: Lab Level: Undergraduate