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The Shoemaker Impact Structure in Australia (previously referred to as Teague Ring and renamed in honor of the late geologist Eugene Shoemaker). The precise age of the impact is unknown, but it is estimated between 1000 and 600 million years ago. The structure is 30 km in diameter.NASA/GSFC/METI/Japan Space Systems/U.S./Japan ASTER Science Team
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Gosses Bluff impact structure in Northern Territory, Australia. It has a diameter of 22 km.UIG/Getty Images
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Barringer impact structure (also known as Meteor Crater) in Arizona. It is 49,000 years old and has a diameter of 1186 km.Getty Images
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Barringer impact structure (also known as Meteor Crater) in Arizona. It is 49,000 years old and has a diameter of 1186 km.UIG/Getty Images
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The Acraman impact structure in Australia. It is 570 million years old and has a diameter of 160 km.UIG/Getty Images
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Manicouagan Impact Structure in Quebec. It is roughly 213-215 million years old and has a diameter of approximately 100 km.Manicouagan Impact Structure, Quebec, Canada Sensor: L7 ETM+ Path/Row: 13/24 Lat/Long: 51.400/-68.738 Category: Land Features
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The Clearwater Lakes impact structures. They are 270 to 310 million years old with diameters of both craters of 32 km and 22 km.UIG/Getty Images
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Vredefort Meteor Impact Crater in South Africa. It is roughly four billion years old and is the largest verified impact crater on Earth, estimated to be more than 300 km across when it was formed.Planet Observer/UIG/Getty Images
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Wanapitei Lake Meteor Impact Crater in Manitoba. It is approximately 37.2 million years old and has a diameter of 8.4 km.Planet Observer/UIG/Getty Images
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The Lonar impact structure in India. It has a diameter of 1.83 km.UIG/Getty Images
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The Oasis crater North of Koufra Oasis in Libya. It is less than 120 million years old and was thought to have a diameter of roughly 18 km post-impact.Planet Observer/UIG/Getty Images
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Roter Kamm meteorite crater in the Namibian section of the Namib Desert. It is estimated to be between 4 and 5 million years old and has a diameter of 2.5 km.NASA/GSFC/METI/Japan Space Systems/U.S./Japan ASTER Science Team
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Spider Crater in the Kimberley Region of northern Western Australia.Jesse Allen/NASA/GSFC/METI/ERSDAC/JAROS/ U.S./Japan ASTER Science Team
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The Aorounga impact structure in Chad. It is 200 million years old and has a diameter of 17 km.UniversalImagesGroup—UIG via Getty Images
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The Tenoumer meteor crater in Mauritania. It is 2.5 million years old and has a diameter of 1.9 km.UIG/Getty Images
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Chesapeake Bay Meteor Impact Crater in Virginia. It is approximately 35 million years old and is thought to have had a diameter of about 40 km post-impact.Planet Observer/UIG/Getty Images
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