Stars
Heretofore, stars have been playing a definitely significant role in our life throughout the ages.Stars are used in many aspects to help us since ancient times.
First of all, people can infer the direction from the position of the stars. By occasion of the sun rising from west to east, we can figure out four directions to sovle some emergencies just like when we are lost in the valley and we cannot connect with other people. What's more, stars can indicate the time. It is convenient for the ancient people to tell the time by seeing the place the sun located in so that they can make schedule for the day and do things in time. Besides, it's possible that we can know some astronomical information by observing the stars. We can make the classification of the stars and measure the distance between stars by comparing the differences between stars, for instance, size, element, character and so on. And we can know when the star exist by making observations through the telescope. Also, we can search for other planets to live on if the Earth is used up. There are many fairy tales about stars such as Hou Yi the Sun-shooter and Chang'e the Lady in the Moon. With the desire of exploring the outer space to feel the universe, people invented the space craft and the rocket to fly away from the Earth to realize their dreams. At least, we can learn more knowledge about the stars.
As a conseguence, the Earth are surrounded by all sorts of stars which have been made good use of up till now.
