IXPE finally measures the long-predicted polarization of X-rays from the surface and magnetosphere of a magnetar (4U 0142+61) as published in Science, 2022Sci…378..646T. The extent of polarization from 2-4 keV is about ten percent indicating the surface is likely to be solid or liquid. Above 4 keV, the mode of polarization switches and increases to about 30% as expected from resonant Compton scattering in the magnetosphere. This is an amazing validation and probe of the magnetar model!