Astronauts discovered what could be Earth's oldest rock — on the moon

moon.
(Image credit: RONALDO SCHEMIDT / GettyImages)

Apollo 14 astronauts may have made a far bigger discovery than they expected nearly 50 years ago.

Some of the first moon walkers brought back extraterrestrial rocks that are still being studied today. And inside one of them, scientists have found what may be the oldest, best preserved chunk of Earth ever discovered, a study published in the journal Earth and Planetary Science Letters reveals.

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Kathryn Krawczyk

Kathryn is a graduate of Syracuse University, with degrees in magazine journalism and information technology, along with hours to earn another degree after working at SU's independent paper The Daily Orange. She's currently recovering from a horse addiction while living in New York City, and likes to share her extremely dry sense of humor on Twitter.