Park Shift Theory
The Park Shift, first introduced in the book Ender's Game, is a theory in which a spaceship or object traveling at the speed of light, can instantly, or near instantly, slow to a stop. This is used when a spaceship meets with another and connects, or if a spaceship is nearing its final destination. An otherwise impossible feat, since the inertia would propel the object much farther than the intended target. In doing so, the ship in question would have to exit light speed which would cause time to revert to relativistic speeds. Since travel at light speed, or near light speed, would cause a time dilation effect, the time in travel would make a near second take weeks or months in correlation with the rest of space. The scientists of the series do not know how the Park Shift actually works, and it seems to have been discovered accidentally, and used ever since.
Read more about this topic: Concepts In The Ender's Game Series
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