Star Trek Movies....Which one?

[Professor Brensec]

If they get the old head of Data out of the cave, then who ever does find that cave, wouldn't call the Enterprise back to Earth, the crew would not be investigating, so on and so forth... and Data would not get injured. So his head wouldn't be there.

I love a temporal paradox.

That's one of the many things I liked about "The Time Machine" that I mentioned. The fact that he primarily goes forward in time to find out the answer to "Why can't I change the past".
The answer is that he built the machine BECAUSE his Mrs died. So if she lives, he would never build it and couldn't go back to save her......etc......

I've always loved the movies and episodes of shows that feature time travel of some description (except "Back to the Future" - lame rubbish). I don't know why, I suppose I just like to try to fathon the unfathomable.

One things for certain, they wil NEVER be able to go back in time. I know it because if it does happen, they would already have come back and told us.............

[Travis]

As much as I want time travel to exist, I realized recently that it can't.

If time travel existed, someone would eventually come along who would be crazy enough not to care about paradoxes or the consequences of changing the past, and they would go do something horendous.

The reason time travel doesn't exist?  No one's killed Hitler or saved Jesus . . .

[SilverFox441]

The "Multiverse" theory makes allowances for time travel.

If I go back in time and kill my grandfather before my father is conceived then I cannot be born to go back..

The standard temporal paradox.

In the multiverse both can still be true.

In my timeline I build the time machine and carry out the actions. In another timeline dear old granddad eats lead and dies...and I am never born.

Because timlines are branched I can reach any past timline by going back to a point of commonality. Travel into the future is impossible because it would depend on events that have not yet occured.

[Craig.]

yes but if you have killed your grandfather and not been born technically there would be no one to go back and kill your grandfather so then you would still be born, god i love temporal mechanics:)
As for time travel itself, but whats to stop a timetraveller from the future coming back from say 1000 years from now grabbing one of us and taking us to his time, thats traveling forwards.

[SilverFox441]

As for time travel itself, but whats to stop a timetraveller from the future coming back from say 1000 years from now grabbing one of us and taking us to his time, thats traveling forwards.

That wouldn't be the future...it's the present. Your present in which the time traveller intervened, and his present in which he intervened. Assuming you are returned, the intermediate actions in the time line you experience may not take place to create the future you experienced.

[alrot]

[quote]

The reason time travel doesn't exist?

[SilverFox441]

Tachyon theory has yet to be disproven...and one research group has said they detected tachyon emmisions (no one else has been able to duplicate the feat yet). Tachyons would tend to disprove the multivers theory though...both can't coexist in our understanding of the universe.

Stephen Hawking has suggested that our understanding is flawed...he actually believes that superluminal travel is possible. I don't claim to understand his reasoning, but it has something to do with reconciling general and special relativity.

[alrot]

Tachyon theory has yet to be disproven...and one research group has said they detected tachyon emmisions
.

With all do respect Silverfox,wich group?,where are the proves?,see at matematic levels became irrational,ill give you an example,the day that such discovery does,it will turn backward all the laws of phisics we know,Albert Einstein,wich work has developes,paticules accelerators (among many other things)
all over the world,we couldn't separates particules,colapse them and even make the plutoniun,we couln't even joint 2 from the 4 forces of nature,given us a clue of early universe,weak,strong,gravity,electromagnetism were once one united in a single force
Stephen Hawking has given us many IDEAS hes was bright about the time arrow,and the big crunch stuff but where are the results of this?in a big box of theoryc ideas,recenly we are getting a universe increasing his speed instead of decrease,how dense its our universe?where did antimater went to?cosmologist are getting nuts,hunting and answer with these new misteries
When I said that taquions are a joke its my personal opinion,of couse Silver I respect your point,but i never believe to fast in what i read,like Spock "I am ruled by a Logic"

[SilverFox441]

http://scienceworld.wolfram.com/physics/Superluminal.html

Lots of good info there on superluminal theroies.

We already can prove the falacy of relativity in sub-atomic particles...rather simply. The electrons in any operating circuit travel at a high percentage of C. Why shouldn't there be particles that can skate over the limit?

I do remember that one of the first "tachyon discoveries" was in a supercollider...the scientists observed a result before the first collision sequence took place.

Turned out they were wrong about the nature of the results...but it did lead to tachyon theory.

[Professor Brensec]

Before we get too excited about whether anything can travel faster than C (which I am far too limited mathematically to even understand most of the theories for and against), shouldn't we consider first, the fact that Warp speed (which is the basis for the phenomenal speeds achieved in Star Trek and similar programs) doesn't actually involve 'velocity' as we understand it, but space and it's properties and theoretical ability to change those properties (i.e. Warp) to achieve 'seemingly' fast travel by means of 'jumps' rather than 'actual motion'?  ;D

In other words, when considering the 'faster than light' travel that is portrayed in these series, we aren't really talking about 'speed' as such, but space? So, 'light speed' and whether it's possible to exceed it, is reallty irrelevent because we aren't concerned with 'speed'?  :D

[Craig.]

warp speed as discussed in star trek has to do with sub-space being brought into play and so on. As to if faster than light travel is possible, whenever there is a point on light infront of you then it isnt possible to travel faster than light. However is possible to travel faster than the scientific speed that light travels? One day i am sure it will be. But since even our brightest and smartest scientists still struggle with the universe and its wonders and discoveries, we have no business worrying about that just yet.

[alrot]

However is possible to travel faster than the scientific speed that light travels? One day i am sure it will be. But since even our brightest and smartest scientists still struggle with the universe and its wonders and discoveries

I hope so too

I wondered why we haven't visited by an alien yet,or even receive a any kind of patron in all electromagnetig field,(radio) here yet? one thing im very sure its true, between all this nice topic, the universe is filled of life and there must be a reason why we haven't contact yet

Sorry to be so expectical,I dedicate a big part of my life reading and studing all this cosmologic topics,hundreds of theorys one greather than others,a ridiuculus ones..
there are many things that maybe we get never get an answer.I like to discuss this issues,talk,Unfortualy my vocabulary its limited in English,but I respect others opinion

[Iroquois]

Ohh time travel. Sounds interesting.  ::)
Here's a good site explaining some of the theories.
http://science.howstuffworks.com/time-travel.htm

SilverFox said that it would be impossible to travel to the future but it is possible to travel to the past. If that's so, then how would you get back to your time? Would it be a one way trip?

One things for certain, they wil NEVER be able to go back in time. I know it because if it does happen, they would already have come back and told us.............    

That's what UFOs are.  ;)

[Craig.]

Alrot, Theres good reason why we havent been contacted. Compaired to any species with the ability to contact us, we are primative, we are violent and we are ignorant, i gaurentee you the government of any country on this planet would try to capture and study any being that may visit us and certainly try to cover it up, and this is not going on previous conspiricies its just plain fact. That in itself is both hostile and a stupid idea because i can promise you if something can travel 100's of light years i can also see it being able to wipe us out in a heartbeat. We are simply not ready for any form of intersteller contact, racisim is still a problem, if some people still have problem with black people, how do you think they would handle some alien from another planet?

[Travis]

where did antimater went to?

Just so you know, antimatter was created by sets of particles slamming into each other at the beginning of the universe, splitting off into perfect pairs, IE - particles and antiparticles.

As to where they all went: if a particle and antiparticle collide, they annihilate each other.  Fundamental theory of making an antihydrogen/hydrogen engine for space travel.