Is Time Travel Possible?

Is Time Travel possible? Theoretical physicist and 2057 host Michio Kaku explores the possibilities. Some people said Time Travel is possible because time is relative to an observer based on his position and speed. If you are moving faster, time is slower. Time is the 4th dimension and you have to pass through the 4th dimension to accomplish time time travel. It is the same as time dilation. The speed of light is constant and time relies on the speed of light.

time travel, time dilation, michio kaku, time machine, 4th dimension, time frame

The Time Traveller: Fake or Real?

This guy claimed that he has met himself in the future. Is it possible to travel in the future or he just wanted to get people's attention by making fake story. He told that he "went to the future" and recorded him and himself at the age 70. In theory, it could be possible and a scientist would have to say nothing is impossible. But if he really "went to the future" he should show more proof so that people will believe him and not only showing his tattoo.

time traveller, time machine, time travel, went to the past, science & technology, theory

Time Travel: Einstein's Big Idea (Theory Of Relativity)

This is a little clip of how time travel can occur. It was taken from: The World's First Time Machine (Discovery Channel). Dr Ronald Mallet. This is just a theory of Einstein and maybe it could possibly occurs.

time travel, theory of relativity, Einstein's Big Idea, time machine

Non-Physics Based Experiments

Several experiments have been carried out to try to entice future humans, who might invent time travel technology, to come back and demonstrate it to people of the present time. Events such as Perth's Destination Day or MIT's Time Traveler Convention heavily publicized permanent "advertisements" of a meeting time and place for future time travelers to meet. These experiments only stood the possibility of generating a positive result demonstrating the existence of time travel, but have failed so far - no time travelers are known to have the meeting time and place in a parallel universe. Another factor is that for all the time travel devices considered under current physics (such as those that operate using wormholes), it is impossible to travel back to before the time machine was actually made.

wormholes, time travel, time machine, time rotation, future & past, anthropic principle

Time Travel And The Anthropic Principle

It has been suggested bu physicists such as Max Tegmark that the absence of time travel and the existence of causality might due to the anthropic principle. The argument is that a universe which allows for time travel and closed time-like loops in one in which intelligence could not evolve because it would be impossible for a being to sort events in a past and future or to make predictions or comprehend the world around them. (taken from: Wikipedia.org)

time traveling, future & past, time travel, time rotation, back to the future, time machine, anthropic principle

Special Spacetime Geometries

The general theory of relativity extends the special theory to cover gravity, illustrating it in terms of curvature in spacetime cause by mass-energy and the flow of momentum. General relativity describes the universe under a system of field equations, and there exist solutions to these equations that permit what are called "closed time-like curves", and hence time travel into the past. The first of these was proposed by Kurt Godel, a solution known as the Godel metric, but his (and many others) example requires the universe to have physical characteristics that it does not appear to have. Whether general relativity forbids closed time-like curves for all realistic conditions is unknown.

time travel, physics, time machine, theory, geometric, time traveling

Time Travel To The Past In Physics

Time travel to the past is theoretically allowed using the following methods:

• Traveling faster than the speed of light
• The use of cosmic strings and black holes

physics, time travel, faster than light travel, time machine, time travel theory, metric