George Gamow, the famous cosmologist and nuclear physicist, conjectured that the Universe may be rotating and this may be the cause of galaxy rotation.The author models a complex rotational configuration for the Universe demonstrating that such a spin configuration would have impacted directly on how the Universe developed and behaved.From first principles and using basic concepts in school physics, a young spinning ellipsoidal Universe is modelled to determine possible behavioural characteristics. This demonstrates that a spinning Universe could, indeed, not only offer a perfect explanation for the formation of spinning galaxies, but also for the separation of matter and antimatter in the aftermath of the Big Bang. An examination of some circumstantial scientific information offers supporting evidence for an hypothesis that the Universe has indeed complex spin characteristics.This book contains a very mechanical perspective. It is primarily intended for a young student audience interested in science, such as school or college going, aspiring young scientists. Adults may also be intrigued by the simple perspectives portrayed of the Universe.Readers are re-introduced to rudimentary concepts in physics in an easily readable manner. Many illustrations are used in the explanation of concepts. From a simple conjecture that the Universe was ellipsoidal and spinning, a fascinating picture is developed of such a Universe. A wide variety of basic concepts and principles from mathematics and physics are drawn upon to develop the conjectured behaviour of a Universe containing both matter and antimatter, and the possible consequences. The author is a Cambridge alumnus, and is a Chartered Engineer, and has worked for many years as a practising mechanical engineer.