Since their discovery in 1967, pulsars have have become one of the most important tools in observational astrophysics, providing great insight into problems such the physics of extreme electric and magnetic fields, general relativity, the structure of our galaxy, and the search for exoplanets. Martin Sulkanen, associate professor of physics at Holy Cross College, will tell the story of how pulsars were found, what they are, how we think they work, and the ways they are used to explore important questions in astrophysics.