the moon travelled through space as a small planet which was caught by the earth's gravity.月亮是在太空中被地球引力所控制的一个小卫星as a result,it goes around our planet.the evidence for this theory is that the atoms that make up the rocks on the moon seem to be different from those on earth（研究）结果表明，月球围着我们的行星转，这些证据证明的结论是：构成月球岩石的分子结构好像是不同于地球上的
