From the Cosmological Model to the generation of the Hubble flow

This paper reviews various approaches to the question (pioneered by Sakharov) of how the observed Hubble flow forms. By extrapolating the Cosmological Standard Model to the past, the geometrical properties of and conditions in the early Universe are determined. A new cosmogenesis paradigm based on geodesically complete black/white hole geometries with an integrable singularity is discussed.