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Do WORMHOLES help us to travel in Time??
What is a Wormhole?
A wormhole is a theoretical passage through space-time that could create shortcuts for long journeys across the universe. Wormholes are predicted by the theory of general relativity. But be wary: wormholes bring with them the dangers of sudden collapse, high radiation and dangerous contact with exotic matter.

Wormholes for time travel

Time travel through a wormhole is technically feasible under the rules of theoretical physics—the only catch is that we can only ever go backward.

Astrophysicist Ethan Siegel has explained just how—within the realms of Einstein’s General Relativity—a person could travel through a wormhole and go back in time.

He said , we first need to consider the wormhole(a portal through space)which is created by energy fluctuations in positive and negative directions. The different fluctuations would create a curved space that opposes each other. These two are connected to form a wormhole.If it lasts long enough, theoretically a particle or an object could be transported through it. But the reality of such travel is more complicated, and not just because we’ve yet to spot one.
The first problem is size. Primordial wormholes are predicted to exist on microscopic levels, about 10–33 centimeters. However, as the universe expands, it is possible that some may have been stretched to larger sizes.

Another problem comes from stability. The predicted Einstein – Rosen wormholes would be useless for travel because they collapse quickly.

“You would need some very exotic type of matter in order to stabilize a wormhole,” said Hsu, “and it’s not clear whether such matter exists in the universe.”

Once you have a wormhole, you then need the laws of special relativity to deal with the time aspect.

Siegel writes, “If you travel close to the speed of light, you experience a phenomenon known as time dilation, Your motion through space and your motion through time are related by the speed of light: The greater your motion through space, the less your motion through time.”

If you were traveling somewhere 40 light years away at almost the speed of light, when you returned to Earth more than 80 years would have passed. This is because time travels forward—but how much depends on how fast you are moving through space.

Imagine, one end of the wormhole remains close to motionless, such as remaining close to Earth, while the other one goes off on a relativistic journey close to the speed of light. You then enter the rapidly moving end of the wormhole after it’s been in motion for perhaps a year. What happens?


Do WORMHOLES help us to travel in Time??
Posted on 4th March 2019 by KoushikKaleru
What is a Wormhole?
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A wormhole is a theoretical passage through space-time that could create shortcuts for long journeys across the universe. Wormholes are predicted by the theory of general relativity. But be wary: wormholes bring with them the dangers of sudden collapse, high radiation and dangerous contact with exotic matter.
Wormholes for time travel

Time travel through a wormhole is technically feasible under the rules of theoretical physics—the only catch is that we can only ever go backward.

Astrophysicist Ethan Siegel has explained just how—within the realms of Einstein’s General Relativity—a person could travel through a wormhole and go back in time.

He said , we first need to consider the wormhole(a portal through space)which is created by energy fluctuations in positive and negative directions. The different fluctuations would create a curved space that opposes each other. These two are connected to form a wormhole.If it lasts long enough, theoretically a particle or an object could be transported through it. But the reality of such travel is more complicated, and not just because we’ve yet to spot one.
Two ends connected to form a wormhole

The first problem is size. Primordial wormholes are predicted to exist on microscopic levels, about 10–33 centimeters. However, as the universe expands, it is possible that some may have been stretched to larger sizes.

Another problem comes from stability. The predicted Einstein – Rosen wormholes would be useless for travel because they collapse quickly.

“You would need some very exotic type of matter in order to stabilize a wormhole,” said Hsu, “and it’s not clear whether such matter exists in the universe.”

Once you have a wormhole, you then need the laws of special relativity to deal with the time aspect.

Siegel writes, “If you travel close to the speed of light, you experience a phenomenon known as time dilation, Your motion through space and your motion through time are related by the speed of light: The greater your motion through space, the less your motion through time.”

If you were traveling somewhere 40 light years away at almost the speed of light, when you returned to Earth more than 80 years would have passed. This is because time travels forward—but how much depends on how fast you are moving through space.

“Well, a year isn’t the same for everyone, particularly if they’re moving through time and space differently! If we talk about the same speeds as we did earlier, the “in motion” end of the wormhole would have aged 40 years, but the “at rest” end would only have aged by one year. Step into the relativistic end of the wormhole, and you arrive back on Earth only one year after the wormhole was created, while you yourself may have had 40 years of time to pass.”

Let us consider, if, 40 years ago, someone had created such a pair of entangled wormholes and sent them off on this journey, it would be possible to step into one of them today, in 2017, and wind up back in time at the mouth of the other one… back in 1978. The only issue is that you yourself couldn’t also have been at that location back in 1978; you needed to be with the other end of the wormhole, or traveling through space to try and catch up with it.

Satisfyingly, we discover that this form of time travel also forbids the grandfather paradox! Even if the wormhole were created before your parents were conceived, there’s no way for you to exist at the other end of the wormhole early enough to go back and find your grandfather prior to that critical moment. The best you can do is to put your newborn father and mother on a ship to catch the other end of the wormhole, have them live, age, conceive you, and then send yourself back through the wormhole. You’ll be able to meet your grandfather when he’s still very young — perhaps even younger than you are now — but it will still, by necessity, occur at a moment in time after your parents were born.
A great many unusual things become possible in the Universe if negative mass/energy is real, abundant, and controllable, but traveling backwards in time might be the wildest one we’ve ever imagined. Owing to the oddities of both special and general relativity, time travel to the past might not be forbidden after all!
Funny facts that will occur if you try to change the past:
1. You can meet yourself by traveling to past , but be cautious the you don’t change anything which may lead to good things or even more worse thing at your present times.
2. Let us consider, you have a girl friend in your normal life and now you traveled in time and avoided your meeting with your girlfriend and again come to present,then now she may not recognize you , she may have another boyfriend or even a husband (this type of change is more worst and no one will think of doing this unless he got frustrated with his girlfriend).
3. And one more worst phenomenon, is that, if you stop or disturb the conceiving between your parents then this will effect your existence in future…
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