The Moon is 40 million years older than previously thought :

By analyzing tiny lunar crystals gathered by Apollo 17 astronauts in 1972, researchers recalculated the age of the Earth’s Moon. Although previous assessments estimated the Moon as 4.425 billion years old, the new study discovered it is actually 4.46 billion years old — 40 million years older than previously thought.

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Jennika Greer , Dieter Isheim , David Seidman , Walterp Murphy , University Of Chicago , Negaunee Interactive Research Center , Northwestern University Center , Northwestern Mccormick School Of Engineering , Northwestern Center , University Of Glasgow , Mccormick School , Atom Probe Tomography , Professor Emeritus , Materials Science , Field Museum , Polar Studies ,