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Why did the dark matter hypothesis supersede modified gravity in the 1980s?
1Department of History and Philosophy of Science, National and Kapodistrian University of Athens, Greece.
Studies in History and Philosophy of Science
|July 10, 2025
Summary
Scientists explain why the dark matter hypothesis, not modified gravity, dominated cosmology research. This analysis uses historical and philosophical science methods to assess hypothesis pursuitworthiness.
Area of Science:
- Cosmology
- History and Philosophy of Science
Background:
- Astrophysical anomalies in the 1960s-1970s suggested either dark matter or modified gravity.
- The dark matter hypothesis gained prominence, while modified gravity is largely dismissed.
Purpose of the Study:
- To investigate why the scientific community favored dark matter over modified gravity.
- To analyze the historical and philosophical reasons behind this research trajectory.
Main Methods:
- Integrated history and philosophy of science approach.
- Evaluation of hypotheses based on epistemic criteria: problem-solving potential, compatibility with established theories, and independent testability.
Main Results:
- The dark matter hypothesis was favored due to superior problem-solving potential, better integration with existing theories, and greater independent testability.
- Modified gravity was deemed less pursuitworthy based on these epistemic criteria.
Conclusions:
- The scientific community's choice between dark matter and modified gravity was influenced by specific epistemic factors.
- Dark energy research differs, where modified gravity remains a viable alternative.
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