Looks like another in a long list of "could be" 's.
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mark noble
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Thu 19 Jun, 2014 08:13 pm
Gravity is elementary. Composition of elementary particles determines gravitational force. The gravity of any elementary particle differs by degree of identity.
No two particles have the same gravity - although all (seemingly) identical particles will appear to have the same gravity - At the sub-quantum level they will vary (slightly) to us - massively to any observer at or below that level.