Telescope is the astronomer’s most important tool to explore the universe. More than 400 years ago, scientists invented the telescope. Nowadays, giant optical and radio telescopes are scattered all over the globe, and some are even in the space. With the help of telescopes, mankind has obtained more and more information of distant objects. In this exhibit, you’ll be able to see the development of telescopes in the past 400 years, and appreciate China’s largest telescopes.