Isochrone

An isochrone is a line on a star chart or diagram that connects points representing stars of the same age. In astronomy, it helps scientists understand how stars of different masses evolve over time. By comparing observed star groups to isochrones, astronomers estimate their ages and developmental stages. Essentially, it’s like a snapshot that shows how stars of various types look at a specific age, aiding in the study of stellar evolution and the history of star clusters.