As the capsule thunders downwards, it ejects ballast blocks to move its centre of gravity and tilt its angle of attack.

BBC: Mars Curiosity rover success depends on 'crazy' landing

If the Smokies are where country music bubbles up, then Nashville, 200 miles to the west along highway I-40, is where it comes roaring down the valley and thunders over the cliff.

BBC: America��s country music heartland