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Journey to the Centre of the Earth

Journey to the Centre of the Earth
The forces of gravity are pulling equally in all directions and you are now weightless. But don't get too comfortable. It’s over 6,000C here - you were cooked long ago. The distance to the centre of the Earth has been taken as the volumetric mean radius of the Earth: 6,371km. Note that this distance and the depth of geological layers varies across geographical locations. Depths shown are maxima, except where stated.

http://www.bbc.com/future/bespoke/story/20150306-journey-to-the-centre-of-earth/index.html

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