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In theoretical physics, massive gravity is a theory of gravity that modifies general relativity by endowing the graviton with a nonzero mass. In the classical theory, this means that gravitational waves obey a massive wave equation and hence travel at speeds below the speed of light.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Massive gravity | is a | theory of gravity that modifies general relativity by endowing the graviton with a nonzero mass | 0.90 | text |
| Cassini | instance of | Competitive bounds on the mass of the graviton have also been obtained from solar system measurements by space missions | 0.80 | text |
| MESSENGER | instance of | Competitive bounds on the mass of the graviton have also been obtained from solar system measurements by space missions | 0.80 | text |
| which instead give the constraint λg | instance of | Competitive bounds on the mass of the graviton have also been obtained from solar system measurements by space missions | 0.80 | text |
| DGP | instance of | but also in related theories of modified gravity | 0.80 | text |
| certain scalar-tensor theories | instance of | but also in related theories of modified gravity | 0.80 | text |
| where it is crucial for hiding the effects of modified gravity in the solar system | instance of | but also in related theories of modified gravity | 0.80 | text |
| Massive gravity | related to 3D massive gravity | Here | 0.60 | section |
| Massive gravity | related to 3D massive gravity | In | 0.60 | section |
| Massive gravity | related to 3D massive gravity | Planck | 0.60 | section |
| Massive gravity | related to 3D massive gravity | This | 0.60 | section |
| Massive gravity | related to 3D massive gravity | Chern | 0.60 | section |
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