Discussion Overview
The discussion revolves around the comparison of the number of stars in the Milky Way galaxy versus the number of galaxies in the observable universe. Participants explore estimates, evidence, and implications of these quantities.
Discussion Character
- Debate/contested
- Exploratory
- Technical explanation
Main Points Raised
- Some participants suggest that estimates indicate there are as many galaxies in the observable universe as there are stars in the Milky Way.
- Others argue that the Milky Way contains between 200 to 400 billion stars, while extrapolations from the Hubble Ultra Deep Field suggest there could be about 150 billion galaxies in the observable universe.
- One participant proposes that if the two quantities are within the same order of magnitude, it could be considered 'too close to tell'.
- Another viewpoint is that as observational technology improves, the number of visible galaxies will increase, potentially outnumbering the stars in the Milky Way.
- Some participants express a belief that there are more galaxies in the observable universe than stars in the Milky Way, citing future advancements in telescopes as a factor.
Areas of Agreement / Disagreement
Participants do not reach a consensus; multiple competing views remain regarding whether there are more stars in the Milky Way or galaxies in the observable universe.
Contextual Notes
Participants reference estimates and extrapolations, but there are limitations in the assumptions made regarding the visibility and counting of galaxies and stars.