Are Spacelike Movements Physically Possible in Our Universe?

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SUMMARY

Spacelike movements, defined as movements outside the lightcone in spacetime, are fundamentally impossible according to current physical theories. All movements are classified as timelike, with light representing the only lightlike movement. Events that are spacelike lack a definitive temporal order, meaning that their sequence can vary depending on the observer's frame of reference. Consequently, any attempt to move outside the lightcone necessitates exceeding the speed of light, which is not physically feasible.

PREREQUISITES
  • Understanding of spacetime concepts
  • Familiarity with lightcones in physics
  • Knowledge of timelike and spacelike intervals
  • Basic principles of relativity
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  • Explore the concept of causality in spacetime
  • Study the consequences of exceeding the speed of light
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Physicists, students of theoretical physics, and anyone interested in the implications of spacetime and the nature of movement within the universe.

ice109
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so all movements in spacetime are timelike except light which is lightlike. are any spacelike? i understand this essentially means going backward in "time" but if it's impossible, which it is generally is believed to be, it seems to me like there is no physical significance to being outside the lightcone.
 
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Events can be outside the lightcone, and two events which are spacelike do not have any "temporal order," i.e., event A happens before event B in one frame, and the other way in another frame. But once you start moving, say, at the origin of some lightcone, you are bound to move within it, since you will have go at or greater than the speed of light to cross the light cone.
 

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