Caloris Basin

Each orbit lasts 12 hours and is steeply inclined to Mercury's equator, allowing total coverage of the surface but with the closest and sharpest views at the high northern latitudes of the Caloris Basin, the planet's most spectacular impact feature.

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There is a crumpled patch on the surface of Mercury known as the Chaotic Terrain exactly opposite one of its largest craters, the Caloris Basin.

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Caloris Basin The largest basin on Mercury (1300 km or 800 miles across) was named Caloris

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Caloris Basin The largest basin on Mercury (1300 km or 800 miles across) was named Caloris

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View of part of Bridge from marina (southwest quadrant) 2000/01/14 Northeastern Quadrant of the Caloris Basin - This image of the northeastern quadrant of the Caloris basin shows the smooth hills and domes between the inner and outer scarps and the well-developed radial system east of the outer scarp.

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Above: A color image of Mercury's giant Caloris Basin recorded during MESSENGER's first flyby on Jan. 14, 2008.

Science @ NASA 2008

Above: A color image of Mercury's giant Caloris Basin recorded during MESSENGER's first flyby on Jan. 14, 2008.

Science @ NASA 2008