完型填空

　　In the universe, there is the earth, the moon, the sun, the stars and all other things too far away to see. The earth is one of the sun's ___1__ and the moon is our satellite. The moon is about three hundred and eighty thousand kilometers away ___2__ the earth, but it's our ___3__ neighbor in space. It ___4__ more than three days to get there by spaceship. No man ___5__ farther than the moon, but spaceship ___6__ people have reached other planets.

　　Of ___7__ the stars the sun is the nearest to the earth. ___8__ other stars are even bigger and brighter than the sun. They look small only ___9__ they are much farther away. You __10__ see them in the daytime. But if you go out at night, you'll be able to see many of them.