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Barringer to Vredefort: 7 oldest meteor impact craters on Earth
this 66-million-year-old crater is over 180 kilometers in diameter. Visitors can explore the surrounding cenotes Dating back ...
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The steady hail of meteors pummeling the Moon
It was the biggest space rock to hit Earth since 1908. Radius, in miles, of the Vredefort crater, the largest known sign of impact on Earth. The crater — in Free State, South Africa — was ...