Earth’s Oldest Rock Discovered on the Moon 4 Billion Years After It Landed, Study Says

Earth’s Oldest Rock Discovered on the Moon 4 Billion Years After It Landed, Study Says
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The Apollo 14 moon landing was NASA’s third manned lunar landing mission, and it turns out it might have brought back the Earth’s oldest rock.

But how on Earth (no pun intended) could the Earth’s oldest rock, a rock estimated to be an astounding 4 billion years old, have been discovered on the Moon?