If it were really possible to build a warp drive, using it wouldn't make you fly back into your seat as in a science-fiction movie. "Inside the spaceship, it would feel absolutely normal," says physicist Dave Goldberg of Drexel University. "You would be weightless, of course, because you wouldn't have any acceleration on you at all."
That assumes you're on the inside of what's known as an Alcubierre Bubble—a hypothetical construct that could allow a patch of space to travel at many times the speed of light [see "Warp Factor"]. The crew of a spaceship that had entered such a bubble probably wouldn't have any sense of traveling at warp speed—"once you're in there, it's the most blasé thing in the world," says Goldberg—but crossing the bubble's border would be gut-wrenching. It could be as violent as falling into a black hole: The space-time deformation at the edge of the bubble would create an enormous tidal effect, one strong enough to rip your bones apart.
If one were able to construct a warp drive and travel faster than the speed of light how would they know what is ahead of them? Radar would be useless since it can not travel faster than the speed of light so how do they avoid going into a star or black hole?
Well my stupid thinking is that if you would have built a warp drive, a warp drive sensor array would be built into it! I know I'd have one. It would be like driving down a country dirt road at 250mph with a blind fold on. Don't even think about blinking your eyes.....
If your distorting space wouldn't all matter just go around you just like swimming through water?
Most likely you would have to plot out your time and trajectory in advance to make sure that you do not cause harm to yourself and your destination. Also as you pointed out if you were in a space time bubble there would not likely be a way to determine from inside what is going on outside easily so the pre programing would become necessary. Until we are capable of making such a drive through all of this is pure speculation.
I think it would be more like you gettting out of the pool, walking around it and jumping back in it.
I'm thinking if we were smart enough to build a warp drive then we would have some pretty killer stellar maps/models... with that information would be a simple matter of origin, vector and velocity to avoid obstacles. If you know a wall is 3 feet in front of you and you closed your eyes you wouldn't walk into would you??
I think @JellyBelly has a more interesting thought... this type of drive works by shrinking space time in front and exanding in the back - I can't decide if that would mean it would be impossible to hit things, or even more or less likely.
Personally, assuming the maps come first is a little naive... Europeans had ships and sails before maps of the West. However, charting the area before testing the engine would probably be a good idea.
That's precisely the idea. You're not moving through the normal fabric of spacetime. You're warping it. So you're not really moving faster than the speed of light. You're moving space. Making your travel relatively faster than the velocity traveled by light particles in undesturbed spacetime.
With all the talk of FTL these days on this sight, it's a wonder if the boys and girls at NASA are closer to reality than fiction.
The probability of hitting anything larger than an atom in interstellar space is many factors less than being struck by a meteorite while walking down the street.
Even if you were able to project a vector with a clear path, what you're able to see is not whats actually there since you're looking back in time.
@mind967: if you can see it, you likely know how far away it appears and how fast it's moving. Yes, motion is relative, but knowing how an object moves relative to its nearest star will allow you to extrapolate how it moves relative to everything else. You can then do a little simple math to figure out where that object actually is in space.
For instance, we know that Mars is roughly 8 light minutes away from us, so when we look up and see Mars, we see it where it was 8 minutes ago. Since we know how Mars moves in its orbit, we can fairly accurately determine where exactly Mars is at any given moment. We can therefore plot Mars on a stellar map.
The same is true for all of the planets in our neighborhood. Where it becomes potentially problematic is when we're thinking or talking about smaller asteroids. If we're on an interstellar mission or a trip to the outer planets, though, because we know that the asteroid belt is fairly well defined, we could just navigate above or below it, get past it, stop and change course. Unless of course this awesome new drive allows us to turn while traveling FTL.
Also, please do not flame me with how the distance to Mars changes due to our planets having different orbital periods; this was an example that necessarily required simplification.
ignorantia legis non excusat
I thought as we approach the speed of light, all our molecules would stretch out like one long spaghetti in a line. Then if we go light speed or faster we be stretch out like a light beam.
The problem comes being stretch out like a light beam noodle; would we still be alive and later when we slow down, would we assemble correctly too?
As I understand it, the ship is enclosed in a bubble that warps space-time. The ship would not actually be moving at FTL but the space around the ship would be moving at FTL, carrying the ship with it. To reach the speed of light otherwise our mass would have to be considerably smaller, which is what I think you are referencing Anylcon.
I believe the biggest hurdle would be communication, having a ship that is capable of FTL is great...but how would we send information. Think they should figure that out first.
They have 50 years to figure things out, April 5, 2063 is coming quickly :)
If anyone is interested in seeing that they are funding at NASA then please sign this petition:)
To the articles author, I disagree with the conclusion. I do not think inertia is enabled by space-time. I could be wrong, but since space-time doesn't seem to create drag on an object the way water does, my guess is that moving a bubble of space time would not drag the object along with it. Any object inside an FTL bubble would still try to shift during acceleration.
I guess we won't know for certain until we can determine if space-time can actually be segmented and moved around independent of the whole. i.e. is Space-time fluid like water or a fixed lattice like ice?
FTL communication could possibly be done with quantum entangled particles.
Humans traveling at or near the speed of light would simply die. The only possibility left travel the cosmos and here and there and returning in a timely manner would via a worm hole.
traveling at the speed of light.... I would imagine that any craft built that could withstand the g-forces at that speed, probably would be able to punch through anything that gets in its way, who knows though, the idea is just as hard for me to grasp the outcome as a breaking down an organism to subatomic particles and reconstructing it in another location.
I think it would be similar to the scene in the movie Time Machine. What would it look like if half your body was inside and the other half outside? Time would be relative to each side, but looking at the other half it would be fast or slow.
Travelling via warp bubble has no acceleration or inertial effects on it's contents, nor will those contents be left behind when the bubble moves. This is NOT speculation, it's already know simply because of the studies that have already been done on the expanding universe. Ask any Astronomer, Astrophysicist, or Cosmologist if you don't believe my statement.
Your not quite getting the concept of relativity right. If you were traveling near the speed of night and zip past me, I would see you as a elongated streak. You would see me scrunched up, and we would both perceive ourselves normally. Confused yet?
Special relativity shows how space-time can be bent and stretched. Gravitational lensing and frame dragging both consequences of non-rigid space-time and both have been observed and measured.
Quantum entanglement cannot be used to communicate faster than light. In order to read information from one entangled particle you have to know the quantum state of its pair at the same instant. Otherwise there is no way to distinguish a message from quantum "noise". That information would have to travel by conventional methods, and would be limited by the speed of light.
The speed of light is poorly named. It is actually the ultimate speed limit of everything in the universe, information, gravity, mass, energy, ...everything.
Not sure where the challenge is, but once this technology is readily available you can always send out "mapping" probes and FTL communication relays throughout the universe to build a FTL road map. In fact, given the many contemporary articles regarding quantum entanglement, instantaneous "universal" communications may be possible; regardless of distance. [see one of Einstein's many famous quotes: "Spooky action at a distance"] Once armed with this information the risk of FTL collisions at various destinations would be minimized.
In accordance to the Theory of Relativity, gravity and acceleration are equivalent, then hypothetically the bending of space-time can be possible with a group of phased standing waves. http://www.youtube.com/watch?v=sgAwyr5Udzw
We have a better chance of inventing a time machine, than faster than light warp drive.
Oh, I am serious!
How about aaaaaaaaaa..... GPS?
@##/**%%&& Take it easy man I was only kidding
If you want to communicate while traveling at warp speed... Use subspace.
Ya never know. I mean look we gots the sliding doors now like they had on the Enterprise and the dvd thingies. LOL I want to be beamed like they was beaming around. (As long as what happend in the 1st Star Trek movie didn't happen though, yoicks!) Cut down on traffic and smog. Wasn't a branch of the military working on a cloaking device last year?
I have the answer but its impossible to explain to people who have not experienced a phenomenon of immediately coming to a full stop and dropping 1,000's a feet per minute all at the same time with out the feelings of thrust etc.
Oh and about black holes
Forces of Equal Evolution act upon Forces of Equal Evolution and through reverse evolution each dividing cell (because of nuclei high orbit speed) is smaller than the last. These “many” small cells having the same energy at a nucleus do not interact with matter. This is why it is calm in the eye of a tornado, the cell of a cumulonimbus cloud and my science adding black hole or the nucleus of any cell!
Colors of the Sky
Blue, Orange, Green “GREEN”
Only once have I experienced the inside of an active cumulonimbus cloud.
Flying the clocks at about five thousand feet I was met with heavy turbulence, deafening thunder and lightening all around the aircraft – close enough to touch.
At about the time a decision was made to somehow get the hell out of this, I broke out into a humongous cavern. It was medium light getting lighter in elevation, the colour being an eerie green-grey.
It was dead calm and I will swear that the drone of the engines were one half of normal.
I would be enjoying this fantastic experience but for the fact that the ‘outy’ was going to be like the ‘iny’ – and it was.
Guess that I can claim to have flown an aircraft through a Black Hole! “WOW”
Actually, we only know for sure that it is the speed of electroweak interactions. Mass, gravity, etc is still up for grabs. Since almost all forms of long distance communication are electromagnetic (including spooky interaction) the speed of information is also the speed of light.
If massive particles, or gravitational waves travel at FTL speeds then we probably won't find out till we discover local dark matter, or other gravitationally related phenomenon. Right now all of our particle physics uses radio energy to control and manipulate particles. This demands interactions at less than FTL speeds. Frequency shifts give diminishing energy returns for particles accelerated this way. A simple analog is trying to use a propellor to push an airplane faster than the speed of sound. (hypothetically possible, but extremely difficult to do)
I wonder if this diagnostic is not really a physical joke believed by physicist Dave Goldberg of Drexel University, or many things may have missed him about the possible constitution of empty space that I will not reveal for the time being.
Even if I really believe that the speed of light is not completely constitutional and may have several sequences in different phases, even though, this speed may be easily over passed by different means, in conventional or non conventional science by another approach in physics.
Anyway, in the virtual example he gave, at least 2 improper possessions are wrong.
First: At this constitutional speed he will no more exist in conceptual constitution, nor the virtual shield to be used. Second: If virtually really done without disintegration both of them, the astronaut will feel nothing because they will be here and there in the same time. And this will not remain in spatiotemporal condition.