time travel Essay

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For many years time travel was the stuff of science fiction. This was all just part of the world’s imagination until recently. Scientists now believe that the current laws of physics allow us to travel though time. They believe that we can now travel back to see our founding fathers sign the declaration of independence. We could travel to 2999 to witness the birth of the next new millennium. Such travel would require a machine capable of withstanding great pressures and incredible amounts of speed. The act of actually traveling though time is for the most part, agreed upon, but the implications of such travel is not so decided upon. Many different theorists have different views of what could happen and some go, as far as to say that if we …show more content…
To get the other half we have to convert our thinking from moving though time to moving though space-time (Hewitt 213). When we move, we not only move through space, we move though time. This is the idea of space-time. If a person were to stand still, they would be moving only though time. If they moved a little bit, they would be moving though space a little bit, but still mostly though time. If one were to travel at the speed of light, what changes would they experience in time? The answer is simple; they would be traveling through space, with no travel though time (Hewitt 214). They would be as ageless as light, for light travels though space only (not time) and is timeless. > The frame of reference of a photon, a particle of light, a trip across the universe would take no time at all (Hewitt 214).
To understand how traveling though time would work, we must first understand how time and space can be stretched. Motion in space affects motion in time. Whenever we move through space, we to some degree alter our rate of motion in time. This is known as time dilation, a stretching of time that occurs ever so slightly for everyday speeds, but significantly for speeds approaching the speed of light. If we were to attempt to travel to the nearest star, Alpha Centauri, which is 4 light years away, even traveling at the speed of light would take 8 years round trip (Hewitt 228). The center of our galaxies is something like 30000 light years away and at the speed of light

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