Wales Post-16

Have you ever wondered why stars look different colours? What do these colours mean? How do we know what stars are made of? Explore these questions with our classify a star activity.

Supernovae are exploding stars which increase in brightness very suddenly and unexpectedly.

Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.

You have likely heard about the Universe expanding. Or that redshift can tell us about the movements of galaxies. Both are difficult ideas to imagine and understand.