Could this FTL idea with a fast moving large mass be possibl

In summary, the conversation discusses the possibility of achieving faster-than-light travel by using a high speed singularity or large mass. This idea is based on the observation that space can be stretched by strong gravity, causing objects to appear to move faster. The theory suggests that by moving a large mass, such as the sun, at a high speed, it could potentially appear to be moving faster than the speed of light from an observer's perspective. Possible ways of testing this theory are also discussed, including using smaller masses and creating a singularity. However, the conversation ultimately questions the validity of this theory and asks for input from experts on relativity.
  • #1
michaellee8
Could this FTL idea with a fast moving large mass be possible?
I have recently come up with a possible way to achieve faster-than-light (FTL) travel by using a high speed singularity or large mass.

Background
As everyone knows, according to relativity, under normal conditions, it is impossible for anything initially slower than light become as fast as light or even faster, because anything with mass requires infinite energy to approach speed of light.

However, speed is not the only factor of relativity, gravity will affect it as well. There was an experiment shows that even light will bend as it travels near a strong gravitational field, for example Sun. That observation shows space can be stretched with strong gravity, and give some insight to this idea.

Observations
The experiment shows that if we take a point of observation in a position of small gravity, let say w, to observe something that travels along/near another point of observation, let say s, that is in effect of strong gravity. The speed we observes in w in will be slower than that of in s, that is vw < vs, where vs = c in this case.

Theory
How if we actually what moving is Sun itself, instead of object around it? Let’s assume it moves in a speed v = 0.5c, that is quite slow, but what is its speed to a point of observation with much smaller gravitational field, let say our Earth? Since the space around Sun is stretched according to our observation, if the Sun travels 1km, we should see it traveled more than 1km since the space around it is stretched to us, right? We let such ratio be r, where r > 1.

Let’s consider the new v that is very close to c, let say 0.9999c. Given a r > 1, let say 1.1, aren’t we are going to observe that the Sun travels faster than c since 0.9999c×1.1 > c? The Sun is moving FTL according to our observation! right? This way does not need any sort of subspace or even harder solutions, we just need a large mass and enough energy to push it fast enough. And this way does comply with relativity if we pit Sun as our point of observation, right?

Possible ways of testing
Although it is not so possible to let the Sun move in that speed, I believe we will be able to push Moon or other lighter mass to that kind of speed one day, and observes what will happen.

I think that is quite possible to create a small singularity or just some denser matter with those experiment devices we have today, and we can test the theory.

Conclusion
Can some experts on relativity tell me if there are any logical errors or mistakes in this dumb theory?
 
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  • #2
You are misunderstanding how the speed of light limit works in curved space time. A better way of thinking about it is: nothing can win a race with a flash of light that is right next to it and moving in the same direction. No matter where you are and how you arrange things, the flash of light will always be moving faster than any object next to it.
 
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1. Is faster-than-light (FTL) travel possible with a fast moving large mass?

There is currently no scientific evidence or theoretical framework to support the possibility of FTL travel with a fast moving large mass. The speed of light, which is approximately 299,792,458 meters per second, is considered to be the universal speed limit in the known universe. Any object with mass that approaches or exceeds this speed would require an infinite amount of energy and is therefore considered impossible according to our current understanding of physics.

2. What is the concept behind using a fast moving large mass for FTL travel?

The concept behind using a fast moving large mass for FTL travel is known as the Alcubierre drive. It proposes to manipulate spacetime by creating a warp bubble around the spacecraft, allowing it to travel faster than the speed of light without violating the laws of physics. However, this concept is purely hypothetical and has not been proven to be feasible or scientifically sound.

3. Are there any known examples of FTL travel using a fast moving large mass?

No, there are no known examples of FTL travel using a fast moving large mass. As mentioned earlier, the concept of FTL travel with a fast moving large mass is purely theoretical and has not been proven to be possible. While there have been some experiments and research into manipulating spacetime, none have been successful in achieving FTL travel.

4. What are the potential consequences of achieving FTL travel with a fast moving large mass?

If FTL travel with a fast moving large mass were to somehow become possible, it would have profound consequences on our understanding of physics and the universe. It could potentially open up new avenues for space exploration and colonization, as well as revolutionize transportation and communication. However, it could also have unforeseen consequences and ramifications that we are currently not aware of.

5. Is there any ongoing research or developments in the field of FTL travel with a fast moving large mass?

While there is ongoing research and experimentation in the field of manipulating spacetime, there is currently no significant progress towards achieving FTL travel with a fast moving large mass. Many scientists and researchers believe that it is not a practical or feasible concept, and therefore, most efforts are focused on more realistic and scientifically sound methods of space travel.

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