According to the theory of special relativity, it is not possible for an object with mass to move at the speed of light. As an object with mass accelerates and approaches the speed of light, its relativistic mass increases, and it requires an infinite amount of energy to reach or exceed the speed of light. Therefore, it is impossible for a massive object to achieve or exceed the speed of light.
However, let's consider a hypothetical scenario where an object could travel at the speed of light. In this case, according to special relativity, time dilation occurs. Time dilation means that as an object's velocity approaches the speed of light, time slows down for the moving object relative to a stationary observer.
From the perspective of the object traveling at the speed of light, time would appear to stop entirely. However, it is important to note that this scenario is purely hypothetical, as it contradicts the known laws of physics. According to our current understanding, objects with mass cannot reach or exceed the speed of light.
Therefore, based on our current understanding, it is not possible to travel at the speed of light, and the concept of stopping or experiencing time while moving at the speed of light does not apply to objects with mass.