Is it possible to artificially open a black hole, or move spacetime?
Before you read on please ensure that you understand that this is all THEORETICAL stuff. By the way I'm 16 so this question may sound absolutely ridiculous to actual physicists out there, but please don't hate, unlike most people my age I am genuinely interested in this stuff and not getting drunk or high everyday.
Right, so I've been researching some stuff recently and I've read that, instead of moving an object through spacetime, we move spacetime around the object, and in doing this we could travel to places faster than light usually would. This is the Alcubierre drive right? And it's theoretically possible as well?
My question is, the only thing I know of that changes the shape of spacetime is a black hole - here's where it gets a bit ridiculous - will we ever develop technology that will artificially open a black hole or a worm hole, or anything else that could move/warp spacetime, and use it to travel in a spaceship? Will warp drive ever be possible? And what would we need, theoretically, to make it possible?
Yes, I think this is relevant to physics. I think you'd be stupid to disregard it and say it's nonsense - I'm sure 200 years ago people thought the idea of aeroplanes (or whatever they knew of that could transport people over long distances in short amounts of time on earth) was ridiculous - but here we are with state-of-the-art jet planes. Developing faster than light travel would mean humans could explore much more of the observable universe and could possible answer one of life's greatest questions - are we alone in the universe?
Correction - a black hole is the only thing I know of that can considerably move space-time, enough for it to be warped
^^ enough for it to be warped in order to travel through it faster than light would
- John WLv 77 years agoFavorite Answer
You're right, you do sound ridiculous but at least you're trying to envision the concepts. No you can not open a black hole but you could create micro blackholes by impacting high speed particles together. Such black holes wouldn't exist for long but you can imagine a cloud of such micro black holes concentrating small amounts of space before evaporating in shimmering Hawking Radiation. Problem is it takes us an accelerator that occupies several countries and consumes so much energy that the towns along it have to have their power usage at their lowest levels before the accelerator can be used to even come close to creating a micro black hole which we have not yet done. A warp drive would need more than quadrillions of these black holes and we can't even produce one. Then you have the problem of expanding space behind the warp bubble, we know that space can expand but as far as we know, it expands at the same rate everywhere, that rate has been increasing so we've hypothesized dark energy may cause space to expand and if you could create dark energy then perhaps you could expand space more quickly in a certain area. Of course, we haven't an idea of what dark energy is and only a few possible examples that might be dark energy.
The initial calculations for the Alcubierre drive required more energy than existed in the entire Universe. Recently, people have been playing with the math and believe that by changing the shape of the warp pocket, the energy requirements could be reduced but even if the drive could be made, there are significant problems such as the warp bubble heating to temperatures higher than the Big Bang simply because there's no way for heat to dissipate from the bubble, of the drive literally destroying everything you are moving towards, of being unable to stop the drive from inside the warp bubble, of requiring the entire path of the warp bubble to be seeded with the micro blackholes before the warp bubble exists ( the bubble can move faster than light but the micro blackholes can't so they have to be a string of them each going out in sequence. Likewise whatever expands the space would also have to be strung out along the path. The warp drive would be more like warp rails and would need to be put into place at sublight speeds before a warp bubble can travel through it.
Don't count on the Alcubierre drive to free us of the lightspeed prison. You can fully expect interstellar travel to be generation ships, cryogenics, seed ships and or digital crew ships. The generation ship is the only one possible with today's technology but the digital crew ships isn't far away. The long trip time simply mandates a novel way of financing the venture purely through philanthropy would be needed.Source(s): http://en.wikipedia.org/wiki/Micro_black_hole http://en.wikipedia.org/wiki/Casimir_effect http://www.nature.com/news/quantum-gas-goes-below-... http://en.wikipedia.org/wiki/Generation_ship http://www.kurzweilai.net/uploaded-e-crews-for-int...
- Anonymous7 years ago
"... this is all THEORETICAL stuff ..."
No since you do not arrive at quantification, it is all hypothetical stuff.
"... will we ever develop technology that will artificially open a black hole or a worm hole, or anything else that could move/warp spacetime, and use it to travel in a spaceship?"
It is the only way we can ever do it, and arrive anyplace interesting, in one person's lifespan (without learning hibernation and better systems engineering than we have now).
"Will warp drive ever be possible? And what would we need, theoretically, to make it possible?"
On the drawing boards now, and requires an exotic form of matter that has never been seen, and is not predicted to exist by any current physics.
What is your motivation? Writing a story, or hoping for the stars? If we do not have the stars now, could you imagine it is because we need to learn how to live with one another, first?
- kumorifoxLv 77 years ago
"instead of moving an object through spacetime, we move spacetime around the object"
At this point in time, we cannot even visualise space-time, let alone move it. We can feel the flow of time and see the dimensions of space, we affect space and change it, but we have no way to change time; for us, it always moves forwards. We can slow it down for ourselves by moving, but we cannot halt it or contain it. And without being able to manipulate time more extensively, we cannot hope to move space-time around an object instead of moving the object through space-time.
"the only thing I know of that changes the shape of spacetime is a black hole"
That is not true. All mass warps space-time. The heavier or denser an object, the larger the warping. Flies, with their low mass, leave almost no imprint on the space-time fabric. Humans leave a minuscule imprint. Earth is large enough to warp space-time to keep the Moon in orbit. The Sun warps space-time in a measurable way, as proved by the Cassini space probe (an experiment was done to prove Einstein's law of general relativity, using the Sun's gravitational distortion of space-time, and it was measured to an accuracy of a few parts per million). All these objects leave "dents". Black holes, however, form bottomless (or nearly bottomless) wells in space-time, due to their extreme density. This extreme warping means that, to escape a black hole, you'd need near- infinite energy to climb out of this well in space-time. And nothing we know has so much energy, meaning any object falling into a black hole is trapped by the warped space-time.
"Will warp drive ever be possible?"
Possibly, but unlikely in the way that it was presented in sci-fi. Stephen Hawking did once say he was working on the possibility (while on the set of Star Trek, actually). But to do that, we'd have to understand how time works, how exactly it is intertwined with space, and how we could reversibly and selectively warp space-time without requiring infinite energy. Using current knowledge, it would mean artificially increasing the density or mass of an object to such a degree that it would be comparable to a star or black hole. And then we'd have to be able to move the fabric's distortion in a controlled manner, before returning the mass or density to normal. And since, currently, we don't even know exactly what causes mass (and even if we did understand fully, we'd most likely have to harness the Higgs' boson first), with current knowledge and technology, warp drive and FTL travel appear to be impossible.
Never say never, though. We might learn a lot more about the nature of time to when we can begin to understand it. And then it's a whole new game.
- FaessonLv 77 years ago
No, no its not. Its also not "theoretical" but merely conjecture, perhaps just speculation or even a wild premise for a TV sci-fi show.
<edit> pretty sure he meant "artificial" warping space/time. That really is sci-fi. If you read the question, you'd certainly get the implication of black holes "warping" space/time for some speculative "warp-drive", NOT just a clinical description of mass.
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- 4 years ago
In particle accelerators, miniature black holes can also be created but these evaporate as a result of Hawking's radiation before they may be able to soak up a neighborhood particle. The LHC is the first collider anticipated to do this but it surely occurs always when cosmic rays strike the atmosphere. What we gain knowledge of in labs are black gap analogs that function aspects of a blackhole. One is to cross a laser beam of a certain frequency by way of a substrate like glass. The glass slows the beam down and the beam surely changes the refractive index of the material because it passes by means of creating a layer the place on one facet, the velocity of sunshine is one pace and it can be slower on the opposite, this emulates the habits of the event horizon. We will additionally do black gap analogs with sound.
- 7 years ago
<< My question is, the only thing I know of that changes the shape of spacetime is a black hole ...>>
--- Wrong. According to theory of relativity, every mass distorts space-time. It's that only black holes do it in such a dramatic way that, for example, near the event horizon of a black hole, time flows at a much slower rate.
<< ...And what would we need, theoretically, to make it possible? >>
--- To create a black hole you need a lot of energy/mass concentrated in a small volume of space. Our technology is nowhere near that.
EDIT: Actually, we might be capable of creating mini black holes, but they do not warp space-time enough to allow some space/time travel, plus they evaporate in a matter of milliseconds, if not less.
EDIT2: @Harley: << "warping" space time is also sci fi >>
-- Please first read about general relativity before talking like you have a PhD.
P.S. Thanks for TDs.
- Harley DriveLv 77 years ago
wormholes don't exist they are sci fi and fantasy , black holes are unlikely to be holes and even a small black hole destroys anything near it , "warping" space time is also sci fi and even if it were not it would require more energy than our whole solar system contains, you need to read some serious science books not the comic book science you have been reading , we can't even repair all our potholes , faster than light travel is way beyond anything we know about physics, the real world is much more mundane than sci fi enthusiasts like to admit, the other answers are based on guesswork and conjecture none of them are fact which is in short supply when the subject of black holes and wormholes arises,
- 7 years ago
I would imagine that it would take a lot of energy in order to open up a small black hole but if hawking radiation is correct it would lose mass and vanish quickly.
- Anonymous7 years ago
Artificial black hole - see link.