If a light year is the distance a photon travels in one year as observed by a motionless point of reference in a vacuum, considering special relativity, how long does it take for a particle of light to travel a light year from its own perspective?
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I particle traveling at the speed of light takes no time to reach it’s destination from the particle’s perspective.
This doesn’t mean it is moving infinitely fast though. Since space is contracted by relativistic speeds. At the speed of light, distances in the direction of travel become zero. So you travel zero distance in zero time from the perspective of the particle.
it will take 1 year for particle of light from its own perspective because TIME DILATION IS RELATIVE.the object/particle undergoing time dilation never knows himself about it.though his time runs slower relative to motionless objects.
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