next question: Older stars collect in groups called what on the outer regions of a galaxy?
Options:
- night sky
- black hole
- globular cluster
- press conference
- heavens
reasoning:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The collection of older stars in groups is called as globular cluster. Globular cluster is a group in which older stars get collected on the outer regions of a galaxy. The answer is globular cluster.