FROM LIVE SCIENCE
A meteorite that rocked the Sahara
A meteorite that rocked the Sahara desert over 300 million years ago left behind quite a scar that's been photographed before.
New satellite images released by NASA this week provide a closer view of the Aorounga Impact Crater in north-central Chad, one of the best preserved impact structures in the world.
The crater measures 10 miles (17 kilometers) across with a peak that is surrounded by a small sand-filled trough. This feature is surrounded by an even larger circular trough. Winds at the site blow from the northeast and sand dunes formed between the ridges are actively migrating to the southwest. Measuring 10 miles (17 kilometers) across,
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