This book call " Photo-Guide TO The Constellations".In the book, it mention the stars in the space and how we can watch it from the earth. this is because the light between the earth and the space have a big different in the light change. it make the distance which we saw the stars have a big different from the real distance. This knowledge is the same as the topic we have studied before , it is call optics. Although optic is a normal things happened it out daily life, but it can use to do lots of different things, such as space, it can calaucate the react from the space and the Earth. Also, before i read this book, i only know the function of optic is to light in our daily life, i haven't thought it can be a communticate between space and our Earth.

in the text book, it only teach us the function of the optic is to light in our daily life, but after i read this book, i know that it can be a light for the star in the space too. by having light in space, we can know more about the stars and more details of it, such as the meaning of the stars, the history of it and what is the relationship between each of it.

the books has told us that every stars have theirselves meaning, why it has that meaning, what is the function of its stars , and how the scientist find the stars and why the call that name.Although the book mention only a few of the stars , and the history of it, but it also tell us how to find the stars but ourselves by using some science-tools to find it out.

the tools are all reacted to optics, all of them are using some sample rules of optics to make it but it can see far away from the Earth , and it had been made in long time ago. according to the book, the optic is an quite important to physics because lots of knowledge of physics are been made while optics is already found. because of this , so i found this book to be my physics project's topic.

After i read it , i really know more about optics and i were quite interest with the optics.