Cosmologists Achieve Unprecedented Accuracy in Measuring Universe’s Expansion
The Daily Galaxy • • science
Key Points:
- An international team of cosmologists has achieved the most precise measurement of the Hubble constant to date, reaching 1% accuracy by unifying various measurement techniques into a single statistical framework.
- The Hubble constant measures the universe's expansion rate and is key to estimating its age; however, there remains a significant discrepancy known as the "Hubble tension" between local measurements and predictions based on early universe models.
- Despite the unprecedented precision, the study confirms that the Hubble tension persists, with local measurements exceeding early universe predictions by about 10%, suggesting potential new physics beyond current cosmological models.
- The collaborative effort demonstrates that no single measurement dominates the result, indicating robustness in the unified approach but also emphasizing the need for further research to resolve
