The earth moves round the sun,and the moon moves round the earth.When our part of the earth turns to the sun,it is day.When our part of the earth turns away from the sun,it is night. The sun is much bigger than the moon.But sometimes the moon looks bigger than the sun,because it's much nearer to the earth. the sun is very bright.It gives a very strong light.The moon looks quite bright,too.But it doesn't give any light at all.It only reflects the light of the sun. The moon looks much bigger and brighter than the other stars.But actually they are much bigger and brighter than the moon.They look smaller than the moon,because they're much farther away from us. The sun is much smaller than the moon..The moon doesn't give any light.The other stars look smaller than the moon because they are really small.The moon moves round the earth.When our part of the earth runs away from the sun,it is day.
参考资料:自己翻译的,有些意译,请见谅