When we talk aboutthe universe,I mean the earth,the sun ,the moon,the star and the space among them.Many of the stars can't be seen because they are too far away.Man-made satellites have been sent out inti tge space by many countries.They are used for helping us learning more about the earth ,the weather and other things.They are also used for sending and receiving messages.It makes people from different countries to understand each other much better,So people say the world itself is becoming a more smaller place.
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