In the past 120 years, physicists have revamped our understanding of matter — of everything that makes up the world. This week on the show, particle physicist Suzie Sheehy takes us on a tour through a cosmos of physics experiments that have revealed the nature of the atom and unveiled particles that exist outside of it. We’ll hear the tales of adventurous experiments and intrepid experimenters, including ones who didn’t receive their due. And along the way, we’ll learn about the ways that particle physics touches our everyday lives.