* Gravity is a force, not a particle: It's a fundamental force of nature that attracts objects with mass. It doesn't travel as a wave or a particle.
* Gravitational influence is instantaneous (over large distances): While this seems to contradict the speed of light limit, it's a topic of debate in physics. Current theories suggest that gravitational influence can be felt instantaneously over vast distances, but this doesn't mean information travels faster than light.
The speed of light is relevant to gravity in these ways:
* Gravitational waves: Gravitational waves, ripples in spacetime caused by massive objects accelerating, do travel at the speed of light. These waves were first detected in 2015.
* Propagation of the gravitational field: Changes in the gravitational field propagate at the speed of light. If a massive object suddenly appears, its gravitational influence wouldn't be felt instantly across the universe. It would take time for the field to reach distant points.
In summary:
While gravity itself doesn't have a speed, its influence (or changes in its field) do travel at the speed of light.
