Time Travel Research Center © 2005 Cetin BAL - GSM:+90 05366063183 -Turkey / Denizli
Time
Travel In Space
What Is a Black
Hole?
A black hole is a
finite amount of mass that is infinitely dense and infinitely small. Yet, this seemingly insignificant region
of space exerts such a gravitational pull that nothing can escape from being
sucked into it. All energy, mass,
and even light, cannot come in contact with the boundary (event horizon) without
getting vacuumed into singularity of the black hole. Singularity is the center point of the
black hole where it is speculated to be the end of time and the end of space,
since all matter is condensed almost into nothingness.
Black Holes,
White Holes, and Wormholes
The possible existence of black holes also suggests
the possible
existence of entities known as white holes. These two entities are the complete
opposite of each other. The black
hole draws in matter with gravitational force, but the white hole pushes away
matter with an anti-gravitational force.
Therefore, it was concluded that
black holes and white holes must be connected in some way because of their
conflicting nature. Many theorists
believe they are connected by wormholes. In the 1960’s, a mathematician named Roy
Kerr came up with a theory that it would be possible to dive into a black hole,
go through a wormhole, and come out through a white hole, ending up at a new
time and space. The level of force
that the black hole forces onto the wormhole is absorbed by the white hole and
distorted into another area in the universe. This existing system would constitute
the means for time travel. The way
the system would work is that an object would be pulled into the black hole and
then shot through the wormhole at approximately the speed of light until the
object reaches the end of the tunnel where it would be pushed out through the
white hole. Thus, the object
would emerge into another universe of a new time and space. Many scientists disagree with this
theory because they believe that no object can enter a black hole and reach
singularity without first getting crushed by the weight of the gravitational
pull.
Figure 1: Wormhole time travel
diagram
Another theory of time travel is based on
Albert Einstein’s theory of relativity that states that any mass curves
space-time (Figure 2). Imagine the
universe as two parallel sheets (Figure 1). Masses in space place pressure on these
two sheets which causes the sheets to curve and bend toward each other. At one point, these two space times meet
and create a tunnel. This tunnel is
also called a wormhole. Through
this hole, we would be able to traverse through space more quickly, going from
one end of the universe to the other.
For example, if we wanted to go from Earth to the star Sirius, it would
take at least take 9 light years, but with a tunnel connecting Earth to Sirius,
the trip there and back could be made within a lifetime.
Figure 2: The effect of gravity
on mass in space
Cosmic Strings
In 1991, J. Richard Gott, a physicist from Princeton University, proposed a new theory of time travel via cosmic strings. A cosmic string is a two-dimensional version of a black hole. Similar to the way that a black hole’s mass collapses into a single one-dimensional point called the singularity, a cosmic string’s mass collapses into a string-like object or in other words a two-dimensional singularity. Physicists speculate that cosmic strings existed as a result of non-uniform expansion of the universe after the Big Bang occurred. A cosmic string has never been found but it is hypothesized that they line the entire universe. The disproportional orientation of the universe makes the existence of these strings highly possible. Matter is dispersed unevenly throughout space where there are clusters of mass forming galaxies and where there are huge regions of empty space. It is hypothesized that the expanses of empty space are the regions where cosmic strings exist.
Cosmic strings are thinner than the nucleus of an atom and embody millions upon millions of pressure. Much like a black hole, when an object passes by a cosmic string, the object will be pulled in by the gravitational force and become attached to the cosmic string. In this state, the object can travel at incredible fast speeds and distort thespace-time that it lies in. The gravitational force on the mass of the object is what bends time, thus making it possible for the object to travel through time.
When two cosmic strings pass close by each other or when one cosmic stringpasses a black hole, space-time is interrupted. As two of either of these entities come in contact, there is enough energy to distort the time curves in the surrounding space. Therefore, time travel could be possible if we discovered a way to navigate around the course of the cosmic string when the space is distorted. Gott proposed that this is possible because the space-time warp would be great enough for a spaceship to be able to travel faster than the speed of light. By maneuvering through the time warp, we could possibly be able to travel to any time and any place.
Figure 3: Illustration of Black hole
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