Graduate student Michael Zevin interacted with about 30 visiting students in two sessions during Take Our Daughters & Sons to Work Day 2016 at Norris University Center. He explained how much can be learned about our universe using light, even light invisible to humans, and showcased Northwestern’s historic Dearborn Telescope. The students used spectral tubes and diffraction gratings to explore how light can tell us what makes up galaxies billions of lightyears away. Mike also introduced the concept of spacetime and the recent observation of gravitational waves to the young enthusiasts!