How do we break lightspeed?

If it was possible aliens coming from worlds much older than ours would have visited us by now.

>>7986945
maybe they see humans as niggers and don't want to communicate with us
i mean,radio signals travel at light speed,why can we not send matter instead?

>>7986938
>how would a warp drive work?
By cheating space.
>why can't we cheat space?
Lack of funding drive.
>travel faster between stars?
Time.
>How do we break lightspeed?
Become a tachyon. Anything else is strictly non-breaking workarounds to FTL travel.

>>7986952
so,all that we need is funding and an ACTUAL drive?
that means it's not so hard
all we need is for people to take more interest into those things instead of becoming welfare kings or wageslaves

File: latest[1].jpg (80KB, 640x480px) Image search: [Google]

80KB, 640x480px

>>7986938
man gunbuster had some dope designs

>>7986938
It won't be faster than light speed travel. Your best bet will be shortening the distance via a wormhole. Obviously this is straight up science fiction right now, but it seems to be the more likely workaround.

quantum entanglement

>>7986948
Because matter doesn't self-perpetuate its wave function across space.
>>7986955
>instead of becoming welfare kings or wageslaves
There is no fixed pie. False dichotomies tend to be freakishly terrible at raising funds, let alone at organizing actual funding drives.

We don't, instead, we make humans live long enough that slower than Light speed travel becomes an option.
As a Transhumanist, I believe that option is getting fairly close to becoming a real possibility. We already have artificial neurons the size of your pinkie nail, and growing smaller with time. Eventually, we can replace the human brain with these artificial neurons and thus take the first step towards immortality.
Alternatively we get some more data from that jellyfish that's already biologically immortal and "fix" our genes so we stop aging.
Either way we go into space at sub light speed and begin colonizing/teraforming planets as we go. Maybe eventually we use Quantnum mechanics to teleport objects or get into molecular assembly so we can just make what we need, but that's a long ways off.

http://members.shaw.ca/mike.anderton/WarpDrive.pdf

This is entirely physically sound within the framework of General Relativity. The challenge is creating the technology that can actually warp spacetime in a way that resembles the metric formulated by Alcubierre, or one similar to it.

>>7986945
fermi please go.

The galaxy is huge and Sol is in the outer rim.

Move the rest of space in the opposite direction where you're going.
That should be able to get you to 2 times the lightspeed.

>>7987018
The only post with any value iit

Wait until space expansion exceeds light speed.

File: 1458087010087.jpg (67KB, 590x539px) Image search: [Google]

67KB, 590x539px

>>7986938
>What do we need to go past lightspeed and travel faster between stars?

>always wanting to do things the quick way

There's no worm holes, no FTL travel, no teleportation of beings, no dimensional skipping, there's nothing. You need to build either some cryo-sleep thing, some generational ships, or do what the aliens in Rendezvous with Rama did, and 3D print a copy of your ass at the destination.

We may one day travel between the stars (read, not a fucking chance), but we will never travel between galaxies.

File: X on SCI.png (42KB, 694x968px) Image search: [Google]

42KB, 694x968px

I really thought this would be the thread I'd win in.

>>7986948
Only things with zero mass travel at c.
>>7986985
>Because matter doesn't self-perpetuate its wave function across space.
Photons don't have wavefunctions.
>>7987018
That isn't "entirely physical", because it requires negative energy. It makes sense within general relativity as a whole, but not within the specific solutions describing our world.

>>7987698
I can't tell if your image is bait or just dumb

>>7987683
>We may one day travel between the stars (read, not a fucking chance),
It's not actually that unthinkable. It took thousands of years of traveling for humans to spread across the Earth. It may well take us thousands of years again to explore the stars.

File: FXp2y4cK2Mg.jpg (42KB, 604x340px) Image search: [Google]

42KB, 604x340px

>>7986938
We will use our Clerics and Shamans for summon Cosmic Pirates for doing business with them: wet girls, alcohol, marijuana cigarettes, gold, gems in exchange for old half-lightspeed Cosmoship schemes.

>>7986938
You need to warp back to >>>/r/eddit

>>7986938
We don't.

You will never live in Star Trek. Get over it.

Liberate tute me ex inferis

>>7988079
Joy killer detected.

>>7986971
>shortening the distance via a wormhole.
>>7987018
>creating the technology that can actually warp spacetime in a way that resembles the metric formulated by Alcubierre

Sorry, but GR still says wormholes and warp drive violate causality, since there will be a frame of reference where you arrive at your destination before you leave your point of origin.

>>7987011
>we make humans live long enough that slower than Light speed travel becomes an option.
While that might satisfy your personal desire to be a space cowboy, it still effectively prevents the formation of interstellar governments or trade.
And, for the foreseeable future, even sublight travel is ridiculously expensive.

>>7988123
>Sorry, but GR still says wormholes and warp drive violate causality
An Einstein-Rosen bridge violates GR how?

>>7988099
your feelings are irrelevant to reality.
It won't happen. grow the fuck up

>>7988092
where we're going we won't need eyes to shitpost

>>7988165
This is what skeptics said about flight. You people are mentally ill.

>>7986980
won't work.

You can't control that. It can only be measured and observed.

>>7988135
>An Einstein-Rosen bridge violates GR how?
>>7988123
>since there will be a frame of reference where you arrive at your destination before you leave your point of origin.

https://www.google.com/search?q=barn+and+pole+paradox

Pure conjecture of course. But what if there way to interfere with how the mass of an object relates to space?

>>7988135
>An Einstein-Rosen bridge violates GR how?
Oh, p.s.: I didn't say wormholes violate GR, but rather that GR says wormholes violate causality.

>>7987783
>le light is particle meme

FUCK YES

>>7988186
>You can't control that
for now

>>7987783
The negative energy requirement is more generally a requirement for a repulsive, rather than attractive, gravitational effect. While mass with negative energy density would achieve this, there at least one physical phenomenon that we know actually exists that can produce the same effect: dark energy. We have already observed dark energy causing distant galaxies to have a speed greater than the speed of light relative to us, so the concept is not without precedence.

File: epbiBlN.jpg (63KB, 640x390px) Image search: [Google]

63KB, 640x390px

>>7988178
>This is what skeptics said about flight. You people are mentally ill.
Some people were skeptical about manned flight because it just _seemed_ unlikely, they had no scientific basis for the claim that flight was impossible.

>>7986980
>quantum entanglement
I never quite got the practical application of FTL here.
Sure, it has incredible implications for physics in general.
But how could it help FTL?
It doesn't seem to be any different than:
>write the same number on two slips of paper
>put both in envelopes
>mail one to London
>mail the other to Tokyo
>recipients open envelops simultaneously
>ta-daaa: FTL!

What am I missing?

>>7988123
>Sorry, but GR still says wormholes and warp drive violate causality, since there will be a frame of reference where you arrive at your destination before you leave your point of origin.
GR does not say this; a misapplication of the concepts of SR say this. Note equation 13 in the Alcubierre paper linked in >>7987018. The proper time is equal to the coordinate time, assuming the ship is at rest relative to the chosen reference frame before the warp drive is activated and with respect to its local spacetime during the operation of the warp drive, meaning there is no Lorentzian time dilation. In other words, the transformation from some outside observer to the ship inside the warp bubble is trivially Galilean.

The proper speed of the ship is defined with respect to its local spacetime, since causal events are essentially local phenomena, but it is given an apparent speed as a result of the motion of the spacetime itself. Unless the motion of the metric undergoes some transformation which disallows the spacetime itself to travel faster than the speed of light in any inertial reference frame, which doesn't conform to observations of the apparent velocities of some galaxies exceeding the speed of light relative to us as a result of the expansion of the Universe (see: motion of spacetime), then we should expect no violation of physical laws from this metric. If you were to represent the motion of a warp drive on a spacetime diagram, the light cones would tip over as a result of the motion of the metric.

To put it simply:
no superluminal Lorentz transformation => no frames in which time travel occurs (there exist no closed timelike curves in this metric) => no causality violations

>>7986945
>implying they're not already here and living among us

>>7988890
>To put it simply:
>no superluminal Lorentz transformation => no frames in which time travel occurs (there exist no closed timelike curves in this metric) => no causality violations
I'm not talking about the Lorenz transform.
Obviously, neither the Albecure warp drive, nor wormhole travel involve relativistic speeds.

I'm talking about relativity of simultaneity.

Let's say tow lightning bolts strike within the same millisecond, one in London, one in Tokyo.
Which one happened first?
It depends on your frame of reference.
Each one happens first in some frame of reference.

Now what if instead of coincidental lightning bolts, we're talking about someone using a teleporter to travel from London to Tokyo?
There's going to be some frame of reference where the traveler arrives in Tokyo BEFORE they leave London, thus violating causality.

Just Google "alcubierre drive causality".
https://www.google.com/search?q=alcubierre+drive+causality

>>7987860
> never [...] travel between galaxies

challenge accepted by whole mankind, patience required.

>>7986938
>E=mc2
>the faster you go the heavier the mass
> infinite energy required
>mass cannot travel beyond LS

>>7989127
>>E=mc2
>>the faster you go the heavier the mass
>> infinite energy required
>>mass cannot travel beyond LS
We're already talking about Alcubierre drives and wormholes, Anon.
Please read before you post.

>>7986938
We don't. All we need is an Infinite Improbability Drive.

>>7988805
>We have already observed dark energy causing distant galaxies to have a speed greater than the speed of light relative to us

Something tells me you don't know what the fuck you're on about.

>>7989159
>we're already mindlessly reciting a load of stupid crap without any idea of the physics, or more accurately, fantasy, behind it
Fix'd