Age of moon

Nobody knows the age of the moon. Our Earth has a little less than 5 billion years old, judging by the rocks and minerals of the solar system as a whole. On the Moon has minerals and rocks, which date back to between 3.1 and 3.9 billion years old, with a probability that some have even 4.6 billion years. On Earth, rocks older than 3.8 billion years, are almost unknown. If judged only by that one witness, the moon, possibly older Zemli.Bolshaya fused portion of the Moon due to volcanic activity or other processes, perhaps 4.5 billion years ago. This fusion erased the traces of its early history and the difficult problem of determining the origin of the Moon. About 4 billion years ago, asteroids bombarded the moon - some more than 100 miles in diameter. 'Here was a violent volcanic activity. Then, about 3 billion years ago, most of the volcanoes ceased, but the bombing of the smaller entities have continued, although to a lesser extent, but continuously. If you add or subtract in this process for several years, it changes nothing, except for changes made by the inhabitants of the moon, and a constant fall of meteorites and cosmic dust (negligible in the usual time dimension), the moon for the last 3 billion years, appears very inactive abides in suspended animation).