Is there any thing in this universe that moves faster than light(c) called super luminal motion, ?

Question

Answer from Physicist, and astrophysicists theoretical physicists abd astronomers are requested

Answer 1

No, nothing actually moves superluminally (faster than light).

However, there are things which APPEAR to move faster than light.  Some clouds of fast-moving material from quasars are in this class.  If they are moving on a line only a little bit off the line of sight to Earth, they can be so close behind the light they emitted that their crosswise motion appears much faster than it is.  Example:

A quasar emits a blob of gas moving at 0.9c on the hypotenuse of a 3-4-5 triangle, with the 4-side aiming toward Earth.  It moves .72c toward Earth and 0.54c across the line of sight.  Each year it moves .54 light years across the line of sight, but the light it emitted the previous year is only 0.28 years ahead of the light it is emitting now.  Its apparent cross-wise motion is (.54c/.28) or almost 2c.

Answer 2

It might be thought that special relativity provides a short negative answer to this question. In actual fact there are many trivial ways in which things can be going faster than light (FTL) in a sense, and there may be other more genuine possibilities. On the other hand there are also good reasons to believe that real FTL travel and communication will always be unachievable. This article is not a full answer to the question which will (no doubt) continue to be discussed in the newsgroups for the foreseeable future, but it does cover some of the more common points which are made repeatedly.

It is sometimes objected that "they said no-one would ever go faster than sound and they were wrong. Now they say no-one will ever go faster than light. . ." Actually it is probably not true that anybody said it was impossible to go faster than sound. It was known that rifle bullets go faster than sound long before an aircraft did. The truth is that some engineers said that controlled flight at faster than sound might be impossible, and they were wrong about that. FTL is a very different matter. It was inevitable that someone would one day succeed in flying faster than sound once technology got round the problems. It is not inevitable that one day technology will enable us to go faster than light. Relativity has a lot to say about it. If FTL travel or FTL communication were possible then causality would probably be violated and some very strange conclusions would follow.

Answer 3

I'm no astrophysicist or physicist but i have read that nothing can actually travel faster than light without defying the theory of special relativity.also De Broglie phase velocity is always greater than the velocity of light the formula for calculating phase velocity is
phase velocity=c^2/v
although practically this will not happen as waves travel in packets and not alone as single waves.their collective velocity which is better known as group velocity is actually how fast they travel.this is equal to the velocity of the traveling body which is always less than the velocity of light.

Answer 4

Astronomers use the specialized phrase "superluminal motion" to refer to a particular kind of motion that *appears* to be faster than light, but this is an optical illusion.

Nothing can travel faster than light, ever. However, when something is moving at nearly the speed of light almost directly towards you, there is a well-understood optical illusion that can make it appear as if it were moving faster than c.

This is how it works: consider a blob moving almost directly towards you at nearly c. So the next day, that blob has moved towards you by a huge amount. So the light coming from that second day has much less distance to reach you than the light from the first day, so as a result the light from the second day takes less than a day longer to reach you than the light from the first day. The result is motion that appears to be moving at faster than light.

Superluminal motion is typically observed in jets from black holes that are aimed at us.

Answer 5

I'm a common guy with an uncommon thought. I feel that if anything can move faster than light, it can get disintegrated & cause a sudden burst of energy followed immediately by a vacuum or rather, a black hole.

Just think upon it in your scientific terms to arrive at a logical equation. I leave it to all you guys - scientists, astronomers, physicists, etc.

Answer 6

Such things have been theorized, but to the best of my knowledge there is no evidence that such things exist.

According to Einstein's theory, as an object approaches the speed of light, the object "shortens" or compresses in the direction of travel. (Lots of other things happen to it as well.) *AT* the speed of light, the object would cease to exist (length=0). The only thing we know of that travels at the speed of light is light itself, mathematically described as massless particles called photons. *Faster* than the speed of light, the equations provide an "imaginary" mathematical component to the object (square root of negative number). For this reason, scientists say that the behavior of an object traveling faster than light is "undefined" or "undetermined".

We are aware, however, that Einstein's theory of relativity is flawed. We *know* that it is incorrect because it is inconsistent with itself. Unfortunately, it is the only theory we have which accurately describes the relativistic effects that we can see and measure.

Perhaps, when the source of the flaw of Einstein's theory is discovered and an improved theory is proposed, the imaginary component will be removed and we will be able to predict how objects behave if they exceed the speed of light.

Answer 7

Such things have been theorized, but to the best of my knowledge there is no evidence that such things exist.

According to Einstein's theory, as an object approaches the speed of light, the object "shortens" or compresses in the direction of travel. (Lots of other things happen to it as well.) *AT* the speed of light, the object would cease to exist (length=0). The only thing we know of that travels at the speed of light is light itself, mathematically described as massless particles called photons. *Faster* than the speed of light, the equations provide an "imaginary" mathematical component to the object (square root of negative number). For this reason, scientists say that the behavior of an object traveling faster than light is "undefined" or "undetermined".

We are aware, however, that Einstein's theory of relativity is flawed. We *know* that it is incorrect because it is inconsistent with itself. Unfortunately, it is the only theory we have which accurately describes the relativistic effects that we can see and measure.

Perhaps, when the source of the flaw of Einstein's theory is discovered and an improved theory is proposed, the imaginary component will be removed and we will be able to predict how objects behave if they exceed the speed of light.

Source(s):

B.S. in Physics, John Carroll University

Answer 8

Information

Answer 9

There are some models that include the possibility of "super-luminal" motion, but they are on the very fringes of respectable science. Currently the only "thing" demonstrated to have apparently exceeded light speed is information, specifically the spin information between two entangled particles.

Answer 10

Nothing moves faster than light.

186,242 miles/sec, not just a good idea, it's the LAW.

As an object approaches the speed of light, it becomes harder and harder to accelerate further, as its mass increases. At the speed of light, it becomes infinitely difficult to go faster. There isn't enough energy in the universe to move one molecule faster than light.