Abstract
Over recent years, a disagreement has emerged between the ways of measuring the Hubble constant. This constant describes the expansion rate of the universe and is critical in estimating its age. To determine the Hubble constant we use the relation between a measured distance, along with a velocity from a measured redshift of the light. This literature review seeks to provide a brief history of the constant, an overview of processes for measuring cosmological distances to calculate the Hubble constant, and present proposed solutions to the emerging "Hubble tension."