Using spectropolarimetric data gathered by various telescopes around the globe, astronomers from the University of Amsterdam and elsewhere have identified a powerful magnetic field in the Wolf-Rayet star HD 45166, the exposed helium core of a star that has lost its outer layers of hydrogen. The mass of HD 45166 is high enough that it will produce a neutron star in a supernova, and the field is sufficiently strong to generate a magnetar during core...
