Is faster-than-light travel possible?

[Peter1469]

Is faster-than-light travel possible?

This is a cool article that says it is theoretically possible. You can read the article or watch / listen to the video.

Now about faster than light travel. To get the obvious out of the way, no one currently knows how to travel faster than light, so in this sense it’s not possible. But you already knew that and it’s not what I want to talk about. Instead, I want to talk about whether it is possible in principle. Like, is there anything actually preventing us from ever developing a technology for faster than light travel?


To find out let us first have a look at what Einstein really said. Einstein’s theory of Special Relativity contains a speed that all observers will measure to be the same. One can show that this is the speed of massless particles. And since the particles of light are, for all we currently know, massless, we usually identify this invariant speed with the speed of light. But if it turned out one day that the particles of light have a small, nonzero mass, then we would still have this invariant speed in Einstein’s theory, it just would not be the speed of light any more.


Next, Einstein also showed that if you have any particle which moves slower than the speed of light, then you cannot accelerate it to faster than the speed of light. You cannot do that because it would take an infinite amount of energy. And this is why you often hear that the speed of light is an upper limit.

However, there is nothing in Einstein’s theory that forbids a particle to move faster than light. You just don’t know how to accelerate anything to such a speed. So really Einstein did not rule out faster than light motion, he just said, no idea how to get there. However, there is a problem with particles that go faster than light, which is that for some observers they look like they go backwards in time. Really, that’s what the mathematics says.

[bulletbob]

Neutrinos Already do, and I think in theory it is possible to do but not only are we many generations away from doing and developing the technology there are many other technology that would make it possible for humans to do so . Just something to protect our body's from the massive G forces of acceleration along will be a technology that could take generations to study and develop .
It will be a very complex undertaking that could take thousands of years to develop into a working technology if at all and the cost has more zeros in it the lies about O bung holes family and himself in O bung holes book and speeches

[Padme]

Is faster-than-light travel possible?


Perhaps with suspended animation (Human hibernation,) one day it could be possible? Maybe? We still have to figure out how to keep a human alive traveling at 299.792. 458 m/s

Just for information: So far, the fastest speed humans have been able to travel in space is 11082 m/s

[MisterVeritis]

Political lies travel far faster than the speed of light.

[Padme]

Political lies travel far faster than the speed of light.

LOL Oh, c'mon MV, we are here using some imagination away from politics!




Human hibernation in space: CDF brings science fiction to reality

07/11/2019

https://www.esa.int/Enabling_Support...ion_to_reality

[bulletbob]

One think that one must think of is even if we one day develope the science to travel at light speed most of the places we can go are limited to with our own milky way galaxy and even a light speed we would be exploring it for thousands of years .
Some galaxies are billions of light years away and we have no clue whats beyond them perhaps more perhaps empty space . maybe with luch mankind will have a clue about it in 20 or 30 billiion years if our luck holds out and we can find other planets to move to as ours die off

[Peter1469]

Is faster-than-light travel possible?


Perhaps with suspended animation (Human hibernation,) one day it could be possible? Maybe? We still have to figure out how to keep a human alive traveling at 299.792. 458 m/s

Just for information: So far, the fastest speed humans have been able to travel in space is 11082 m/s

We would need artificial gravity and inertia dampeners. I listed to a podcast last summer about it. Still a long way off, but theoretically possible.

[Padme]

One think that one must think of is even if we one day develope the science to travel at light speed most of the places we can go are limited to with our own milky way galaxy and even a light speed we would be exploring it for thousands of years .
Some galaxies are billions of light years away and we have no clue whats beyond them perhaps more perhaps empty space . maybe with luch mankind will have a clue about it in 20 or 30 billiion years if our luck holds out and we can find other planets to move to as ours die off

... and I believe, that's the motivation behind all those space projects we read and hear about through our days. The search for water, a life preserving atmosphere, how to survive the trip, etc. The topic is just fascinating!

[Padme]

We would need artificial gravity and inertia dampeners. I listed to a podcast last summer about it. Still a long way off, but theoretically possible.

Well, yes, those are also things to think about. However, there is no inertia in space. Not in gravity-free environments. That may actually be an advantage. You mean to reduce inertia as the spaceship approaches the target planet, I see.

[dgold44]

No
only a photon of (zero mass) can reach it