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File:Earth obliquity range.jpg

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22.1° - 24.5°: Range of the tilt of Earth's axis of rotation (obliquity). Present tilt is 23.5°.

Source: http://earthobservatory.nasa.gov/Library/Giants/Milankovitch/Images/obliquity.jpg ; original upload in english wikipedia, 8 March 2005 by SEWilco

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