Human and Alien Origins

Ever since humans existed, they have wondered how they came into existence.  Did they evolve from other primitive creatures?  Or were they sent down to Earth?  Where did they come from?  Who or what created them? 

What about the other extraterrestrial beings non native to Earth?  Did they go through the same cycle as humans leading to a more advanced state?

Human and Alien Origins is a book that explores different alternative theories explaining the possible answers to these questions, as well as presenting interesting theories and concepts on the Cosmology of the Universe and beyond!