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AI-powered ChronoFlow uses stellar rotation rates to estimate stars’ ages

Figuring out the ages of stars is fundamental to understanding many areas of astronomy—yet, it remains a challenge since stellar ages can’t be ascertained through observation alone. So, astronomers at the University of Toronto have turned to artificial intelligence for help.

Their new , called ChronoFlow, uses a dataset of rotating stars in clusters and machine learning to determine how the speed at which a star rotates changes as it ages.

The approach, published recently in The Astrophysical Journal, predicts the ages of stars with an accuracy previously impossible to achieve with analytical models.