Cracking the Age Code: Astronomers Unveil Innovative Method to Determine Star Ages

Astronomers have developed a new method to determine the age of stars by studying their rotation rates. By analyzing wide binary stars, which have independent rotations, researchers were able to match the ages of the binary pairs using temperature and rotation rate. This approach proved effective regardless of the stars' metallicity, suggesting that rotation can be a reliable measure of stellar age. This technique could be applied to single stars, binary systems, and star clusters, allowing astronomers to accurately determine the ages of billions of stars and study their motion and planetary systems.