Table of Contents (click to expand)The Secrets Of Star ClustersBut What About Lone Stars?Why Does Any Of This Matter? Scientists determine the age of a star by looking at the star’s spin rate, brightness, and temperature. When we look up into the dark sky on a clear night, it’s easy to be overwhelmed by the beauty of the stars far above. We connect the dots, find patterns, and even pick our favorite clusters. As amateur star-gazers, one thing we can’t do is determine the age of those stars. Are they a billion years old? 10 billion? Fortunately, scientists have developed … Continue reading How Do Scientists Determine The Age Of A Star?