Abstract
Beginning with the general relativistic, parametric equations for radius and proper time, equations are derived which explain the kinematics between a comoving photon emitter and receiver in a three-sphere, matter-dominated universe. These equations can be used by introductory astronomy students to obtain kinematic information about large redshift objects in a closed universe. An example is provided. Some aspects of photon exchange in the closed, matter-dominated universe are discussed. For example, it shown that photons with the largest redshifts can be received from the most rapidly approaching objects in this model.
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