Why do all the planets in the solar system revolve in a single plane at the same direction? In this book, Dr. Hero (nickname of the author) tells you an easy-going story on genesis of the Sun. The solar system was created orderly by distillation of a primary vortex vapor in chaos. The sun was condensed from the vapor with lighter and heavier elements outside and inside of it, respectively. The sun radiates enormous energy produced by nuclear fission of radioactive elements. You can be a hero to discover a new world of the solar system and let us make difference in science after reading this book. Good luck, and enjoy your exploration to the Sun (Introduction of Author) Dr. Hiroyuki Aizawa (his nickname is Hero) is President of Aizawa Science Museum for education of people all over the world. Hero was Professor at the university of Tokyo, and also a neuroscientist at the Johns Hopkins University Medical Institute. Hero is now an invited reviewer of International Scientific Journal, PLOS-ONE.