What is the link between antimatter research and spectroscopy? In this CERN-Solvay Education video, we build a very budget-friendly version of an instrument used to study light: a spectroscope. You can use it to break down the lights around you into their constituent colours and find out at which energy levels light is emitted. Physicists at CERN are trying to find out whether there are any differences between matter and antimatter that cannot be explained by the Standard Model. The ALPHA experi