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Apollo 17 astronauts collected rocks that reveal the moon's true age

2023-10-29 15:26:00, Tech CNA

Apollo 17 astronauts collected rocks that reveal the moon's true age

Earth's largest satellite, the Moon, has long been a source of wonder, inspiring the imaginations of artists and writers for millennia.

The moon's gravitational pull is also the force behind ocean tides and partly why our planet has a 24-hour day.

Although the Moon is Earth's closest neighbor, many secrets remain - mysteries that can be solved by visiting the lunar surface.

When Apollo 17 astronauts Eugene Cernan and Harrison Schmitt picked up rocks and dust from the lunar surface in 1972, they unwittingly answered one of the biggest questions about the moon: its age.

More than 50 years after the sample was collected, scientists discovered crystals in lunar dust that revealed the moon is 40 million years older than previously believed.

The Moon was created when a Mars-sized object crashed into Earth, throwing a large chunk of rock into space that entered orbit around our planet. Zircon crystals formed when the moon cooled 4.46 billion years ago, and a new analysis traced them to samples from Apollo 17./ CNA





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