Is gravitation faster than light?

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Gravitational waves propagate at the speed of light (c), and while photons are affected by the curvature of space, gravitational effects from black holes do not escape their event horizons. The discussion highlights that gravitational waves cannot leave a black hole, as any changes in the gravitational field occur at the boundary rather than inside. Theoretical physics does not entirely rule out faster-than-light phenomena, such as tachyons, but no evidence has been found. The conversation explores the nature of gravitons and their potential behavior in relation to relativity and space curvature, emphasizing the complexities of gravitational interactions. Understanding these concepts remains a significant challenge in theoretical physics.
  • #91
Some interesting relationships are arrived it by considering inflation to be an on going phenomena - the universe then is in a state of increasing negative pressure - energy is continually added in the form of spatial stress - the total energy is proportional to the surface area of the Hubble Sphere, the density is proportional to 1/R, there is no singularity at the beginning, the total energy (negative potential plus stress) is always zero ...
 

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