The Big Bounce of the Universe

The evolution of our Universe is one of the major topics of Cosmology. Today's, science provides a set of indications based on the big bang and expansion, which proves incomplete, particularly for Beginning and End phases. Our goal here is to propose new complementary solutions using the concept of a quantum Superfluid Space-Time (2), which provides information about its content and the properties of its constituents. The first part of this work, subject of this publication, concerns these phases, which, according to our understanding, merge and generate a rebound following a contraction (big bang).