小时候，你有没有抬头仰望星星的习惯？其实我们这个小小的无意的动作和天文学有着些许联系。天文学是观察和研究宇宙间天体的学科，它研究天体的分布、运动、位置、状态、结构、组成、性质及起源和演化，是自然科学中的一门基础学科。而仰望天际是人类的基础行为。想了解更多的天文小常识吗？《青少年天文常识必读》为大家介绍了"谁是银河系的中心"、"五光十色的恒星"、"可怕的太空垃圾"等等，快来翻开看看吧！(Do you have the habit of looking up at the stars when you were young? In fact, this little unintentional action of us has something to do with astronomy. Astronomy is a subject that observes and studies the celestial bodies in the universe. It studies the distribution, movement, position, state, structure, composition, nature, origin and evolution of the celestial bodies. It is a basic subject in natural science. Looking up at the sky is a basic behavior of human beings. Would you like to know more about the common senses about astronomy? A Primer of Common Senses about Astronomy for Teenagers introduces "Who Is the Center of the Galaxy?", "Colorful Stars", "Terrible Space Debris" and so on. Come to open and see it!)