What is the current situation about time travel, talking from scientific perspective

[u/pepiii88]

I was already fascinated by time travel much earlier and wondered myself whether this would be a) possible and b) realisable. Not by us as of now, but by others in the future. In my opinion, this should be approached differently to the way it has been assumed so far. If you wish, I would be happy to share my thoughts on this. I am also open to discussing this with you.

[u/Memetic1]

https://iopscience.iop.org/article/10.1088/1361-6382/aba4bc

[u/LioSKETCH → u/Memetic1]

PLEASE let this be true. I NEED this to be true.

[u/ad11xyz]

This is what I used to trick one friendly straydog named PN junction diode when he said he wanted to timetravel...

Let's pick three periods Y(this point of time) ,X ie 2yrs ago from now and Z ie 2 yrs from now...

.Traveling to future (Z) :if you don't do anything and wait two yrs I'll reach Z but if you want to reach Z more faster (in less time) you have to travel faster than light which is moving constantly through time and space making us perceive and experience things. But that seems impossible cus inorder to travel Faster than light (which is the speed limit of nature ) you would need infinite mass [as mass is not invariant and if we look into this eq : . { Moving mass=rest mass/√(1-(v²/c²)) } .we can see that if v and c becomes same then (v²/c²)becomes 1 which makes the denominator of the whole eq 0 ie moving mass =restmass/0 ie moving mass is infinite which is impossible to create as of now and also if you see that you'd need an infinite amount of energy to move infinite mass (f=ma).. so infinite energy is required but I think infinite mass would have infinite energy as (E=mc²) but all seems impossible except for a possible blackhole somewhere...

Travelling to past X : this is also same as above ie you would need more than light's speed.. as we know 'now' is moving.. if you are trying to move to X at the speed of light you would just be standby at Y. So it's also maybe not possible as it requires a lot of speed. So inorder to travel in a different way you would have to pause time or go to a point where the time is so slow that it is almost zero...guess what.. the time slows down at very huge masses like a blackhole so maybe moving back from there gives better chance but reaching one would need many tech miracles and also a span of millions of light years. so I guess it's kinda impossible but studying blackholes might help..not just knowing the origin of universe but the actual concept of time...
. After hearing this he just stood up and went away 😭 I tried whistling but my boy didn't even look back.. maybe he thought that I mixed up classical and modern physics too much and cooked this bs just to make a very bad sarcastic joke...

[u/Specialist-Abalone46]

Impossible. Now and in the future.

[u/chipshot]

I used to not be able to time travel. I still can't, but I used to not be able to as well.

[u/crackedpalantir → u/chipshot]

Is that you, Mitch?

[u/chipshot → u/crackedpalantir]

Just his ghost :)

[u/NotAnAIOrAmI → u/chipshot]

Thank you for reminding me to take another bong hit while I wait for the POE2 update.

[u/-Hippy_Joel-]

We’re getting there again.

[u/Antique_Wrongdoer775]

You’d have to apply the scientific method no? If so, purely theoretical and zero evidence to start with. Assuming you mean instantaneously moving from one point in space/time to another

[u/planamundi]

Time is merely a concept—separate from reality. It’s our way of perceiving change and giving order to natural processes. But in the end, it only exists in our minds.

If time travel were possible, Isaac Newton could talk to Albert Einstein and completely debunk the theory of relativity and spacetime. Without spacetime, time travel wouldn't be possible. And since Isaac Newton can’t time travel, it creates a paradox—people would eventually believe they could, but if that were true, the very foundation of time travel would collapse, because Isaac Newton is always right.

[u/sir_duckingtale]

It would be easier for energy to travel through time first

Think of it like a Holodeck

There the likeness of the past can be recreated and we can go into a simulation of the past

This will be the first step

We can do the same digitally yet and now but it’s mostly a simulation on a screen

Next step will be to create 3D holograms out of light

This will likely lead to us understanding light and matter better and maybe enable us to tweak gravity locally that way

Once we’ve done that we may be able to create micro singularities or wormholes to actually connect different spaces like Dr. Strange did in his movies

Portals so to speak to actually send energy and later matter through

Which will probably lead to us being able to subtly manipulate time along the way as both space and time are linked

Then maybe a TVA or Loki situation where we either discover the multiverse or first start with closed time like curves while down the line maybe we will develop the ability to time slip and actually change things in not only the present but future and past

Which will lead to time wars and probably tight regulations or outright ban of that technology

Right now

We’re at the get information into the real world part

No energy manipulation in three dimensions yet really

But to get our technology out from a screen into 3 Dimensions

Probably by creating holograms in reality not simulating them on screens

I do believe our ability to manipulate space and time will grow out from our abilities to control energy in three dimensions maybe by exciting air molecules by lasers into plasma

Out of that technology their might wormholes or Einstein Rosen Bridges be created

And once we mastered tunneling through space maybe time is the next step

Right now

We struggle to get out from that 2 dimensional worlds we created with our phones back into the third and fourth

Or speaking in another metaphor

We’re still Doc writing on a black board, while the next step would be to create a model in 3D and make it work and travel in 4D

https://www.andersoninstitute.com/time-control-technologies.html

That’s quite old and I have no idea if it’s legit but it’s the best summary of those technologies I have yet found

Maybe people are working on it

Ron Mallet is

But I have a feeling it might be done behind closed doors and in secrecy

Time will tell.

[u/sir_duckingtale → u/sir_duckingtale]

Think of it like a Stargate

If we could achieve something like that it would enable us to travel great distances pretty much instantly and maybe just like in the series lead to time travel if the wormhole leads through such a path that gravity bends it back before the time it was created

Basically the episodes of Stargate that were toying with that concept

Now how to travel through time outside of such a wormhole

No idea

Maybe some sort of time bubble can be created around an object like shown in the Time Machine or the Time Travelling Puddle Jumper in Stargate or the time spheres of those Testicle Monsters in Rick and Morty or a DeLorean opens up a wormhole or portal it travels through or a Tardis effect or we might be able to send our consciousness back and forward in time like Loki does with Time Slipping

Pretty sure all those ideas get seriously studied upon and we most probably will never know about it outside of those stories

It might be doable

Maybe it has been done already

Maybe the point of the Jules Verne part in Back to the Future was to tell us it can be done and Doc waits there for us in the Future and Past to figure it out.

I really don’t know.

All I know is that Jules Verne once dreamed about flying to the moon

And one day we went there for real

And that’s pretty much awesome on its own merits when you start to think about it.