ocr: The surface of the Moon Like the Earth, the Moon formed about 4.5 billion years ago, when the solar system was still crowded with pieces of: rocky debris. These rocks bombarded the Moon, covering its surtace with craters. Because the Moon has no atmosphere or planetary activity to the appearance of the surface, these craters are still visible today. Many of them are so large that they can even be seen with the naked eye. One of the most prominent craters 1S Copernicus, which is about 800 million years old. Itformed when a large meteorite smashed into the Moon. The huge impact pushed up walls o ...
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