Even the vastness of imagination cannot fathom the mysteries of the universe. Studies and theories about it have gone this far. Yet, theories remain as is and is yet to be validated. With its vastness, we simply cannot conclude that we are the only living beings in it. We only know about our galaxy and having the idea about other galaxies existing is not far from possibility. There are so many questions that are still unanswered up to this time. Science continues to dig for more information and as they continue to discover more, questions will keep on piling up on the list.