With our current understanding of the universe, everything is constantly moving at the speed of light in the four-dimensional space-time. This is why, if something is moving fast, it starts to experience time differently – it trades some of the movement in the direction of time to move in space. When an object travels at the speed of light – time stops. If you traveled at the speed of light to another planet you would just teleport there from your perspective (no time will pass), even if others would see you traveling at light speed.
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