When you look up at the night sky you’ll notice that the stars don’t all appear the same. Besides the obvious differences in brightness, you’ll see subtle variations in colour – from blue white to ruddy orange. Astronomers have used clues such as these to uncover the secret lives of the stars – including our star the Sun. During this interactive presentation you’ll discover how astronomers plotted the stars on a simple chart (with a very complex name!) which enabled us to uncover the multi-billion year history of stars such as our Sun.