英语翻译
We know much about the universe.It means the earth,the sun,the moon and the stars,and the space between them.Most of the stars are much bigger than the moon,but they look smaller because they are far away from the earth.At night,the moon is high in the sky like a light.But the moon has little light of its own.The light of the moon comes from the sun.The sun gives us light,heat and life.And the plants ,animals and men will die without the sun.The earth is going round itself all the time .When the part of the earth turns to the sun,it is day.The opposite part of the earth is night.The earth is our homeland.We should love it.