In the basement of the University of New Mexico’s chemistry building, Karen Smith punched in the code to get into the lab she manages. Inside, three white cylinders on blue legs that looked sort of like nine-foot-tall cousins of R2-D2 were humming away. “You’re going to want to stay fairly close to the door,” Smith said. “In case the powerful magnets inside those instruments could mess with my recording equipment. These magnets are donuts of wire, and because they’re sitting in liquid helium, they’ve got a lot of electricity running through them, which means they can generate very strong magnetic fields.”