Mass is the amount of matter in an object. The mass of the Earth is estimated to be 6 sextillion, 588 quintillion short tons (6.6 sextillion short tons) or 5.97 x 1024 kilograms. A short ton equals 2,000 pounds as opposed to a long ton, the unit used in Great Britain, which equals 2,240 pounds. The Earth has an average density of 5.52 grams per cubic centimeter, which is 5.52 times the average density of water (the standard).

The method for calculating the mass of the Earth was adopted by the International Astronomical Union in 1964 and recognized by the International Union of Geodesy and Geophysics in 1967.
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The method for calculating the mass of the Earth was adopted by the International Astronomical Union in 1964 and recognized by the International Union of Geodesy and Geophysics in 1967.

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