| 1. | Alternatively smooth plains may be ejecta blankets of the nearby impact craters.
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| 2. | It is probably one of the youngest large impact craters on Titania.
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| 3. | Many fresh impact craters like Lofn also show enrichment in carbon dioxide.
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| 4. | In all, scientists have now found some 150 or so impact craters.
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| 5. | Most of the lake covers an 8 km in diameter impact crater.
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| 6. | The Slate Islands mark the centre of a large meteorite impact crater.
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| 7. | Crater is an impact crater in the Ismenius Lacus quadrangle of Mars.
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| 8. | There they find impact craters and a lake unknown to the druid.
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| 9. | The Narbonensis region coincides with the largest impact crater on Lutetia Massilia.
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| 10. | It lacks the raised outer rim that is typical with impact craters.
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