Enjoy a song,Look and say,big,shine,small,sun,moon,its,earth,star,day,Are there any people on the moon,Are there any trees on the moon,Is there a rabbit on the moon,Unit 8 The Universe Part B,Look!There are so many stars in the sky,sky,in the sky,The moon is in the sky,The sun is in the sky,The sun, the moon and the stars are all in the sky,月亮的直径为3476.2千米,地球的直径为12756千米,太阳的直径：千米, 约为地球的109倍,银河系的直径约为100,000多光年，总质量是太阳质量的1400亿倍,1光年=九万四千六百亿公里,They are very big,They are big,but they look small .Why,Bec
