Time Travel, where you do land ?

HG Wells already went over this in his documentary "The Time Machine" where it showed that you always stay in the same point in space relative to everything around you, you just shift through time.
 
Feek said:
HG Wells already went over this in his documentary "The Time Machine" where it showed that you always stay in the same point in space relative to everything around you, you just shift through time.
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Quantum leap simulates time travel best where you're time travelling into a person, it makes the most sense that your conscience is uploaded into somebody else rather than you physically moving through time which raises all sorts of questions as I don't think you would stay relative to everything else but fixed in a point in space, unless your machine was built to travel to specific x,y,z and time coordinates :)
 
Feek said:
HG Wells already went over this in his documentary "The Time Machine" where it showed that you always stay in the same point in space relative to everything around you, you just shift through time.
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But seeing as ground level changes over time you could theoretically end up either in the air or buried in the ground if you stay in the same relative point.
 
Minusorange said:
It seems to be a question few ever ask when it comes to time travel and most don't consider that everything in space is constantly moving

Even if I went back in time by a day, the Earth have changed position by 1.5million miles :eek:
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Three dimensional movement is not the only problem here. What about the expansion of the universe itself, which is (supposedly) happening in spacetime rather than our normal three dimensions. How would the time machine deal with this?

It sure is a head scratcher.

So if you travel backwards in time not only do you end up in a different three dimensional location you also end up larger in all directions (due to the expansion you have endured over the time period in question. I don't know what the rate of expansion is locally but conceivably you could end up hundreds of times the size of a normal person if you travelled back a few hundred years, maybe even more?

You'd also have the same mass occupying a bigger physical space, so I'd imagine that would cause big issues for you. All of your atoms would be physically larger than those in the world around you, which must wreak havok with the fundamental forces of nature.

Not sure I fancy it really.
 
A time traveller walks into a bar. He enjoyed his food so much he went back four seconds.
 
Minusorange said:
If time travel were possible and time is relative

If you went back in time do you go back in time to the spot where you were in the future when you started to go back in time

Or do you go to a new spot relative to the Earths spin in reverse by however many years you have gone back ?

Would the same apply to any point in space or only objects influenced by mavity ?

For instance if I went half way between the Earth and Moon and went back in time 1billion years, I could still be in the same point in space but the Earth and Moon will be in a different location to where it was before I went back in time because of their orbits around the sun and the solar systems orbit around the galaxy

Or would I always be half way between the Earth and Moon ?

What happens if you go back before the Earth or Solar system even existed ?

I think logically your point in space would stay in the same, but everything else would be at a completely different point in space depending on rate of orbit/spin, if you could reference your point in space
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Minusorange said:
If time travel were possible and time is relative

If you went back in time do you go back in time to the spot where you were in the future when you started to go back in time

Or do you go to a new spot relative to the Earths spin in reverse by however many years you have gone back ?

Would the same apply to any point in space or only objects influenced by mavity ?

For instance if I went half way between the Earth and Moon and went back in time 1billion years, I could still be in the same point in space but the Earth and Moon will be in a different location to where it was before I went back in time because of their orbits around the sun and the solar systems orbit around the galaxy

Or would I always be half way between the Earth and Moon ?

What happens if you go back before the Earth or Solar system even existed ?

I think logically your point in space would stay in the same, but everything else would be at a completely different point in space depending on rate of orbit/spin, if you could reference your point in space
Click to expand...

You're expanding on my musings in the terminator thread aren't you? :)

Certainly a head scratcher.

Edit. No idea why it quoted twice?
 
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I know we should really go back and fix important things, like making it lash with rain in Dallas on 22nd Nov 1963 or change it so Frau Hitler gives birth to a girl on 20th April 1889.

But we should really go back and prevent the birth of the inventor of cargo pants, the world will thank us.
 
Minusorange said:
If time travel were possible and time is relative

If you went back in time do you go back in time to the spot where you were in the future when you started to go back in time

Or do you go to a new spot relative to the Earths spin in reverse by however many years you have gone back ?

Would the same apply to any point in space or only objects influenced by mavity ?

For instance if I went half way between the Earth and Moon and went back in time 1billion years, I could still be in the same point in space but the Earth and Moon will be in a different location to where it was before I went back in time because of their orbits around the sun and the solar systems orbit around the galaxy

Or would I always be half way between the Earth and Moon ?

What happens if you go back before the Earth or Solar system even existed ?

I think logically your point in space would stay in the same, but everything else would be at a completely different point in space depending on rate of orbit/spin, if you could reference your point in space
Click to expand...

Same point in space, I saw it in a documentary once

 
Feek said:
The TARDIS is clever. If you tell it to go between the earth and the moon, it would go there*
If you then told it to skip forward 150 billion years, you would end up 150 billion years in the future in the same location*

*this is assuming the TARDIS is actually controllable. What would probably happen is that you'd tell it to go to Croydon and end up in Aberdeen.
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** You know that avoiding Croydon was hardwired into every TARDIS built.
 
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