Is there anything that moves faster than the speed of light?
151484
Tachyons are hypothetical particles which travel faster than light locally.  They must have imaginary valued mass to be able to do so, but they have real valued energy and momentum.  Sometimes people imagine that such FTL particles would be impossible to detect but there is no reason to think so.  The shadows and spotlights suffice to show that there is no logic in the suggestion because they can go FTL and still be seen.\n\nNo tachyons have been definitely found and most physicists would doubt their existence.  There was a claim that experiments to measure neutrino mass in Tritium beta decay indicated that they were tachyonic.  It is very doubtful but not entirely ruled out.  Tachyon theories have problems because, apart from the possibility of causality violations, they destabilise the vacuum.  It may be possible to get round such difficulties but then we would not be able to use tachyons for the kind of FTL communication that we would like.\n\nThe truth is that most physicists consider tachyons to be a sign of pathological behaviour in field theories, and the interest in them among the wider public stems mostly from the fact that they are used so often in science fiction.
41924
It is definitely possible. However, we do not have the technology needed to reach the kind of speeds necessary to allow for travel to other solar systems, stars, etc. Here's something to consider, though. Einsteins Laws of Relativity, while not allowing travel at full light speed, do allow travel almost up to (and just short of) light speed. As you go closer to light speed, the traveler's clock would "slow down" as compared to an observer's clock on a "stationary" object. If you got close enough to light speed, you could travel across the galaxy (100,000 light years wide) in what might seem minutes or hours to you, and about 100,000 years to me. Great, great stuff. To learn more about this concept, google "twins paradox". Or go to http://media.nasaexplores.com/lessons/02-060/9-12_2.pdf and scroll down to page three. This will explain it more fully to you.
32023
i think u have to go to a room with a tempreture of absolute zero (O Kelvin) then decrease the gravity that the molecules could move faster than light by the way u could race time by this method\np.s. this is only a theory
657967
Nothing can travel faster than light. Your question is a good one and it relies on a nuance of relativity. Einstein stated that nothing can travel THROUGH space faster than the speed of light. The universe recession speeds have nothing to do with moving through space. We observe the universe receeding because SPACE is expanding faster than the speed of light. It is like a balloon being inflated. Since space itself is not limited by the theory of relativity no contradiction occurs I hope that helped.\n\nTo the person who mentioned black holes, these do not in any way prove that einstein was wrong. Follow me here it may get confusing. Light travels through space at the speed of light. A black hole is an entity so massive that it infinitely warps spacetime. So as light is moving through space it comes to this infinitely deep hole. The light follows the contour of space into the black hole. And because of the extreme force and curvature the light cannot escape.\n\nEinstein has been tested hundreds of times and every time it has stood up to the test. Another key aspect of his theory that you should know that light is not relative. If a car is driving 20 miles per hour and the headlights are on the light goes away from the car at light speed and a person standing on the curb will also see the light moving away at light speed. The speed of light is completely independent of reference point and that is why it makes the ultimate reference point
42712
It isn't possible speed wise, the closer you get to the speed of light, the larger your mass, until it becomes infinitely large - there is not enough power in the universe to acellerate you that fast.  The only way to travel faster than light is to take a shortcut, find a way from point a to point b that doesn't involve a direct course - like a wormhole or some other type of spacial rupture. If you think of 3D space as a sheet of paper, light can only travel over the surface - if you fold the paper, you get to the other side quicker by going right through the paper. Technically, you dont go as fast as light (which would have to travel the length of the 'paper'), but you get to your destination before light going the normal space-path would, so in that respect you do go faster than light.
746381
No, the laws of physics currently prohibit any type of matter from accelerating to light speed, since it would take an infinite amount of energy to do so.
410964
i think its very much possible to travel at the speed of light, its just that we would need an extremely strong processor (like a fax machine) to break down the matter that we are made of into energy (E=MC^2) and then after reaching the destination just convert the energy back into matter. (not possible with the technology we have today)
30733
If you were traveling at the speed of light, whether or not your lights work would probably be the least of your concerns.\n\nIn reality, the laws of physics prevent any object from traveling faster than the speed of light.\n\nSomething that is perhaps just as interesting, however, is what happens as your vehicle APPROACHES the speed of light.  Take a look at some of the work done by Einstein to get a general idea on that.
734986
Some things are already able to reach the speed of light such as photons (light).\n\nAccording to Einstein's theory of relativity though, it requires an infinite amount of energy to reach the speed of light.\n\nSo we can't ever make a spaceship go at the speed of light.\n\nWe are currently trying to make atoms move at the speed of light but we only get close with particle accelerators.
1126307
the opposite of the speed of light :)
376581
Theoretically it is possible to build a spacecraft with that speed. Nasa came to me with that proposal. I gave them a design and asked them to design an engine that would generate INFINITE amount of energy. They are working on that.[you see an object offer more and more energy as it nears speed of light till at c it needs infinite e. Sure a body can theoretically have speed GREATER than light.
940425
nothing expands faster than the speed of light
8700
no. well, its absolutely impossible to travel at the speed of light, but lets pretend you can so i can actually give you an answer to the question. The speed of light is actually the ultimate speed limit to the universe, nothing can travel faster than light, so although you would expect the light to be going at twice the speed of light (you plus the speed of light)it can't because it is physically impossible for even light to travel faster than the speed of light so it would be going at the same speed of you and not reach any path in front of you.  Of course, if you turned on your headlights before you started moving, the light would always be one step ahead of you.\n\nbut again, this situation couldn't happen anyway since you can't get to the speed of light, and if you want to know why, look at some of my answers to other questions about time travel (which involves velocity distorting time) and shining flashlights and such.
113872
A tachyon is a theoretical particle that always moves faster than the speed of light. However, no such particles have been found and it is likely they don't exist.\n\nIn Special Relativity nothing can go at the speed of light (except something with no mass, like light). So, we cannot accelerate a spacecraft to go faster than light. As we pour more and more energy out the engine we get closer and closer, but never actually reach the speed of light. This has all be verified with lots of experiments on elementary particles, and in astronomy, much bigger things.\n\nBut, theoretically, if something started out going faster than light it would never be able to go slower. So, again theoretically, if you have a particle accelerator the energy of a collision of protons or electrons or whatever could produce a tachyon. \n\nThough, none has ever been detected, and most physics types believe it is very unlikely that they exist.\n\n\nOne thing to be aware of is that some scam places will sell you magical devices that use "tackions" or something - they often spell it wrong for legal reasons - to cure you of all disease or other nonsense. So stick with scientific tachyons!
157107
Interesting question.  Actually, it may be that 'darkness' is faster than 'light.'  In the universe, there appear to be vast regions of nothingness, like the inside of soap bubbles, that are expanding in volume as fast, or even faster, than the speed of light.  \n\nIt seems like the presense of nothing (or more precisely, the lack of anything at all) has a very weird effect on the 'fabric' of space-time, causing it to expand more rapidly than space which is near to 'stuff.' \n\nThis is called 'zero-point vacuum energy' and plays an important role in modern views of cosmology.
164037
The speed of light is much, much faster than the earth's rotation.
650633
No known force could push you faster than light.  The only exception might be quantum entanglement, but we're nowhere near the technology to use that.  At the speed of light, nothing could catch up to you from behind, but plenty of stuff will hit you from the side or head on.  Just like any propulsion, light propulsion might get you close to but not quite to the speed of light.