New analysis has revealed that moon, which is believed to have formed after a mysterious planet crashed into Earth about 4.56 billion years ago, is most likely between 4.4 billion and 4.45 billion years old.
According to the researchers, the new findings, which make the moon 100 million years younger, may reshape scientists’ understanding of the early Earth and moon, Discovery News reported. Scientists have known the age of the solar system (4.568 billion years) quite well and would be able to tell when relatively small bodies like asteroids formed, precisely, by noting when they extensively melted.
Richard Carlson, of the Carnegie Institution for Science in Washington, DC, said that but it’s not so easy to nail down age of a larger solar-system body. According to the researchers, the moon is believed to have had a global ocean of molten rock shortly after it was formed and the most precisely determined age for the lunar rocks arising from that ocean is 4.360 billion years.
And here on Earth, the researchers have seen signs in several locations of a major melting event that happened around 4.45 billion years ago.