This book addresses the latest advances in dark energy research, including addressing the problem with regard to both the origin of dark energy and the origin of dark matter; vacuum energy as the origin of accelerating expansion and issues which arise from such a hypothesis; born reciprocity and cosmic accelerations; cosmic acceleration for harmonic gravitational connections; showing time as a function of the cosmological comoving distance, using the Friedmann-Lemaitre-Robertson-Walker model, the dark energy problem using a theory with a minimal length on the order of Plancks length; and a discussion on the kinematic aspects of the accelerated universe expansion process.