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The wind-momentum luminosity relationship (WLR) is a method of determining distances to galaxies through observational characteristics of the brightest early stars of a galaxy. It is a relation regarding such stars between their luminosity, radius, and stellar wind momentum (mass loss rate multiplied by the final wind velocity, i.e., the velocity the wind would show at an infinite distance, given both gravity and the radiation pressure from the star), the latter of which can be estimated based upon spectral signatures, such as H-alpha line profiles. The method is supported by stellar modeling and calibrated through observation of galactic and Local Group early stars.