Black Hole time travel?

[Inquisitor]

Gravity slows down time

 

In Black hole, there is a lot of gravity.

 

Thusly, inside the event horizon, time has flowed at much slower rate than outside of it, from the moment of the forming of the said hole.

 

Thusly, is it not possible that 'in' the black hole, it is year 1600 ad or something, earth time, if the black hole had formed in, say 1500 ad

 

So, if we popped in the black hole mentioned above, surely we would be back in year 1600..? And so, when we popped back out, we would then be in the past.

 

So, is this possible? Using black holes to travel back in time? Or have I just misunderstood time and the way it bends in black holes?

[Sisyphus]

Putting aside for a moment how black holes work, if you were to go to a place where time moved slower than outside, and then left, you'd be farther in the future than you would be normally, not in the past. For example, say in the year 2000 on Earth you go into Slowtime Land, where time moves at 1/100th the speed it does on Earth. You live there for 10 years. But since time on Earth has been passing 100 times as fast as in Slowtime Land, when you leave again and come back to Earth, it's the year 3000, even though for you only 10 years have passed.

 

And so you can see, it doesn't matter when Slowtime Land was formed for the effect it has on you, and time moving at different speeds in different places doesn't ever give you a way to travel to the past.

 

Now, that's not really how black holes work, but does it answer your question?

[BigMoosie]

I like your response Sisyphus, in every way possible.

 

....

 

Even the weird ways.

[Inquisitor]

Excellent aswer. Thank you.

[Syntho-sis]

Read "The New Time Travelers"

 

discusses this...

[A Childs Mind]

to me anything black hole related is all theories because we have no idea what happens when something goes threw a black hole

[Syntho-sis]

to me anything black hole related is all theories because we have no idea what happens when something goes threw a black hole

 

A theory is an attempt to explain natural phenomena based off of observations.

 

Just because we aren't totally sure about what happens within a black hole does not mean that you throw the whole thing away.

 

I think a white hole would be a far more plausible time-machine. Although both are believed to be at least possible in our universe.

[A Childs Mind]

 

Just because we aren't totally sure about what happens within a black hole does not mean that you throw the whole thing away.

 

And I understand never throw away something you don’t understand. Keep looking at and and studying it till you finally understand what it is you are questing for

[prateek]

If there is a black hole, there must be a white hole and that is a warmhole. Matter and antimatter have been proven to co-exist. Time travel can be possile but not in backward direction. It will work like Twin paradox.

[Klaynos]

If there is a black hole, there must be a white hole and that is a warmhole. Matter and antimatter have been proven to co-exist. Time travel can be possile but not in backward direction. It will work like Twin paradox.

 

Just because there is matter and antimatter does not mean there has to be a white hole just because there are black holes. There are some very strong arguments against white holes and no evidence for them. Whereas there is evidence for black holes and arguments that show quite clearly that white holes are NOT required.

[salter]

Black holes and white holes have no connection. All a black hole is is a very dense source of gravity, say the earth compressed to the size of a golf ball. If you go into a black hole, you get crushed. If you could somehow avoid getting crushed you would eventually find yourself standing on the source of gravity. No magical portals through space and time.

 

Theoretically, if you could go past the event horizon (the point at which light can no longer escape and, to the observer, time stops) and then come back, you would travel backwards in time; however, seeing as light cannot escape and nothing travels faster, you cannot get back out.

[froarty]

Putting aside for a moment how black holes work, if you were to go to a place where time moved slower than outside, and then left, you'd be farther in the future than you would be normally, not in the past. For example, say in the year 2000 on Earth you go into Slowtime Land, where time moves at 1/100th the speed it does on Earth. You live there for 10 years. But since time on Earth has been passing 100 times as fast as in Slowtime Land, when you leave again and come back to Earth, it's the year 3000, even though for you only 10 years have passed.

 

And so you can see, it doesn't matter when Slowtime Land was formed for the effect it has on you, and time moving at different speeds in different places doesn't ever give you a way to travel to the past.

 

Now, that's not really how black holes work, but does it answer your question?

Great Answer... so then to some small but still measurable degree spacecraft orbiting the sun should be experiencing slightly slower time.