Based on their calculations, scientists believe we may have been off by over a couple hundred million years!
The moon is now believed to be 4.51 billion years old, meaning it formed just 60 million years after the formation of our solar system.
Seeker: The Moon Is Probably Older Than We Thought - and Life Could Be Too
The Verge: Scientists pinpoint the exact age of the Moon - and it's older than we thought
Science Advances: Early formation of the Moon 4.51 billion years ago