Einstein's theory of general relativity says that Time can be bent, stretched and squeezed, and the four-dimensional fabric with a huge mass creates a dimple, or bending of Space-Time, causing gravity.

The Theory of general relativity suggests that if an object is faster than the speed of light, which is 299,792 km per second, and in a vacuum(no air). This also would mean that such objects would have an infinite mass and a zero-length, which is not possible.

• Infinite Cylinder: Also known as Tipler Cylinder is a hypothetical theory of a cylinder capable of handling matter that is 10 times the mass of the sun and rolling it inside.
• Cosmic Strings: Is a theory for potential time travel is to make use of the narrow tubes of energy found in...

Various fictional and semi-fictional methods are discussed in order to build a time machine. It is supposed to have ‘antimatter’, ‘negative-energy density’ and other exotic technology in order to work.

Time Travel, in pop culture and theory, presents many unique situations and paradoxes, the most famous of them being the Grandfather Paradox, which is dealt with in the Terminator movies, along with Back To The Future.

The Science Fiction’s holy grail, Time Travel has been a popular topic in various books, movies and TV series for decades.

Time Travel has been popularized in movies like Interstellar, episodes of Doctor Who, Back To The Future, and even the first Superman movie made in the 70s.

Wormholes are points in Space-Time in which the two different points are connected, allowing instant transportation of matter.