How Do We Measure the Ages of Stars? With Astrophysicist Ruth Angus

How old is a star? It turns out that’s one of the most difficult—and essential—questions for scientists to answer in order to understand the evolution of the Milky Way Galaxy. 

Astrophysicist and Museum Curator Ruth Angus guides you through the innovative methods used to estimate the ages of stars. Discover how rotation rates, sunspots, and brightness measurements help scientists piece together the cosmic puzzle of our universe.