'Fried Egg' may be impact crater

[Still Waters]

Portuguese scientists have found a depression on the Atlantic Ocean floor they think may be an impact crater.

The roughly circular, 6km-wide hollow has a broad central dome and has been dubbed the "Fried Egg" because of its distinctive shape.

It was detected to the south of the Azores Islands during a survey to map the continental shelf.

If the Fried Egg was made by a space impactor, the collision probably took place within the past 17 million years.

This is the likely maximum age of the basaltic sea-floor rock which harbours the feature.

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