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Why do people say travelling faster than the speed of light is impossible ?

  • People will say 'Einstein said we couldnt so we cant', but people said long ago we couldnt travel faster than the speed of sound - wrong. It was said long long ago that if we travelled more than 5 miles per hour our insides would be crushed (the actual speed of this one ive forgotten but it was very low, to do with bicycles or cars being invented). They said the Earth was flat, man couldnt fly etc... I think the only reason Einstein would say its impossible and come up with such an elaborate reason was to make people challenge him and say ' I dont belive it, we can travel faster, we just have to learn how to'. My controversial part - Of course there are always people who accept the easist answer or the one that will keep them in the 'popular' group for fear of ridicule,eg. company men who go along with whatever they are told because they are too afraid to stand up for better ideas or ways.

  • Answer:

    I may seem a bit dim, be way off and not read 1/3 of what you've written but on 1st glance i'd have said impossible simply means we (mankind) have not yet realized a way in which it is possible. Managing it "theoretically" is a whole different ballgame isn't it? To say it is possible would mean that there exists somewhere - RIGHT NOW - a vehicle of some kind that one could get into and accelerate to a speed which is faster than that of light. Well; there isn't!! Not yet!!! And that, i believe, is why people say that travelling faster than the speed of light is impossible (because now as things stand it IS)

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Speed of light is nothing, you should try traveling at the speed of thought.

Sunman

I thought that there are sub-sub atomic particles (maybe radiation) called Quarks that are supposed to exist multi-dimensionally and able to not only exist in 2 places at a time but travel faster than light. Reading 'A brief history of time' by Stephen Hawkins gives a good insight into some of the possibilities. Anyway, theoretically even travelling at the speed of light it would still take far too long for mankind to explore even the local galactic clusters around the Milky Way. Therefore, any cosmic explorations would need to utilise a totally different concept such as space-time ripples and distortions by Pulsar-type stars, gravitational ripples produced by highly dense nebulai or the ever-favourable black hole/white hole theories. Light travelling through the known universe is stretched (known as redshift) as time goes by. Galaxies and cosmic-anomolies are known to bend light and have huge effects upon it. So, for interstellar travel we need to forget about the mindset of how fast can we go but look into alternative methods. A good but totally sci-fi example of this would be the jump/hyper drive or wormhole creating a tunnel or entry into a realm where travel from vastly distant points is achievable in milliseconds a'la Stargate SG1, Star Trek or Star Wars (have I just totally discredited myself by naming these???). Further answers on a postcard...

fionaheels

Faster-than-light travel is probably impossible; but physicists are currently working on new theoretical constructs involving wormholes, string theory and parallel universes. If these theories can be substantiated, they might provide a means of "shortcutting" distance in space, making faster-than-light travel unnecessary.

RG

It has to do with mass increasing with velocity. I don't understand this much myself but apparently you can't expend the last whatever of energy needed to go FTL.

Dognose0

Because it is still impossible to create something that can push an object (like a spaceship) that fast. Even if we could create a laser-driven craft that could be run in a vacuum, it would take years to accellerate to the speed of light. We will have to discover an entirely new division of physics to approach this task. And unfortunately, the odds are not good in discovering such breakthroughs. The age of physical enlightenment is in the past... now we are just perfecting the knowledge we have.

envision_man

Has anyone tried 'hitching a lift' on light itself? Light is after all the only thing that travels that fast. Is it theoretically possible to use light to give us a 'push' in our quest to go faster than the speed of light? I don't doubt that light travel is theoretically possible, but I do doubt that it will ever be achieved given the current school of thought from physicists. Moreover, were it to be accomplished I imagine that Tony Blair would have a go at taxing it, thus negating any advantage of travelling so fast.

DAVIDC

Physics-not just a good idea, it's the law.

michinoku2001

I've never said it was impossible, I just find the thought of turning on your headlights -at- the speed of light amusing. I just thinkk -if- it does happen anytime soon, the mere force to actually push it forward to break that barrier would be akin to force needed in creating a new multiverse.

guhralfromhell

All I can say is that nothing is impossible!

Statto

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