Earth is only but a flourishing and lively rock floating through space and time. As we expand further and further away from our world, we can truly see how puny and insignificant we are. Humans evolved from our given green and blue paradise and developed into a unique and powerful species with beautiful culture, extensive knowledge, and striking diversity that is surprisingly not yet found anywhere else in our - potentially finite but probably infinite - universe. While it is easy to fall into a sense of egotism and feel special, we forget that we are indeed nothing in the vastness of the cosmos. And while we haven't yet encountered anyone else like us, our search for other intelligent forms of alien life is far from over. However, covering this sense of insignificance isn't to make us feel less than we are. We are marvelous creatures; we have the remarkable ability to create our destinies based on the theories, concepts, and gifts of the universe. The purpose of this book is for self-awareness in discovering your place in the universe. We are, in fact, quite puny in the magnitude of the cosmos and beyond, but we can connect with our cosmic selves, become immense, make the most out of each of our lives, and leave behind, what I like to call, your Astrolegacy.Humans are curious animals, and while ignorance may be bliss, the consciousness of who we are, where we come from, and what is in store for us, is the most beautiful and grandiose accomplishment we can have. We all should ask the difficult yet necessary questions of who are we? What is human? What is real? What do we actually know? In this book, I will pose existential interrogations and give you the answers through Astrobiology, Medicine, Astrosociology, Psychology, and Evolution. We are a part of the universe that is observably billions of light-years in extent and billions of years old. All segments of the cosmos are evolving and interconnected; our galaxy is no exception. The stories of our solar system, our planet, and ourselves are part of the grand ultimate narrative of the universe. We are a part of the cosmic evolution. Whether you already believe in this cosmic connection or not, all of us already have an inborn relationship to the ether, as humankind is of stardust. It is scientifically proven that in each of our bodies, our atoms were created in nuclear reactions in astral ovens spilled into the cosmos through supernovae eruptions, and finally merged into each of us through the long process that is the evolution of life. This proves that our existence is of the universe, that our human destinies are intimately connected to the cosmos and cosmic evolution. Therefore, in this book, while I ask the potentially fearing questions of what is real? And who are we? - it is to inspire motivation to make your own destiny, give you further appreciation of your beautiful and unique existence, and uncover your impact on the expansive size and timeline of the universe. Let me introduce you to your Astrolegacy.