We know that according to E=MC^2, we can't go faster than the speed of light; theory being that it would take infinite energy to move mass at the speed of light. We also know that blackholes, with their massive gravitational pull, do not release light. Does this mean that gravity can move faster than light? If so, when we discover what gravity is, does that not mean that there is a possibility that we could use it to move faster than light?
Gravitational effects move at the speed of light. We know what gravity is according to the Theory of General Relativity. Gravity is the curvature of spacetime caused by objects with mass.
FTL can not be achieved through constant acceleration ? what if instead of fuel gravitational pull is used ? Apologies if the question is naive i suck in physics .
As you approach the speed of light, the flow of time for the universe around you will accelerate. Before you actually achieve the speed of light, you'll reach a level of time dilation so significant that the universe will end in a matter of seconds from your perspective. Basically, the universe will end before you actually reach the speed of light.
It is stuff like this that almost makes me think the hypothesis that we are all living in a computer simulation isn’t too wacky. It is as if there are these safeguards built into the universe to keep us from exploring too deeply. The FTL limit. The Planck length (as the resolution of the universe). The Heisenberg Uncertainty Principle. It is fun to think about.
No, it is not known what speed gravity travels at and nothing is actually known about gravity other than what can be observed. A Nobel prize awaits anyone who can show gravity as the fourth electromagnetic effect.
I've just spent a few days reading up on some aspects or relativity. If I understand those concepts correctly, This is what I think is relevant to your questions: Special relativity came first and it doesn't leave room for objects to move faster than the speed of light. General Relativity came later and it frees up the speed limit of objects, but it still limits how fast the information and perception of those objects moves to reach you. You'll never see an object move faster than the speed of light, even if it does so (though it might disappear from your perception). Light is the movement of photons, but Gravity is a force, not a movement. -- Even though gravity is possible though acceleration, it can also be generated by mass, so acceleration isn't the real concept on the force of gravity.-- If the force is strong enough, gravity pulls the photons away so they won't reach your eyes and you can't see the object behind those photons.
