Is gravity a force? Does it exist? If gravity is a force, according to 1st law of thermodynamics, where does gravity gets its energy from? If it exist, it violates the cosmo speed limit. Just imagine that the sun were to just vanish one day, we on earth would logically experience 8 more minutes of sun before everything goes dark!(as the light from the sun takes approx. 8 minutes to reach us) BUTinstead earth would "float" away into the darkness of space as there is no more "gravitational pull" from the sun. So this means gravity travels faster than light. But it can be said that gravity exist as the earth orbits at 90 degrees around the sun, and using mathematics calculation, it does not require any energy for this movement! But i can't think of any explanation that how it can travel faster than light!!!