As far as our current understanding of physics goes, it is not possible to stop time. Time is a fundamental aspect of our universe and is closely intertwined with the fabric of space itself.
Time is always moving forward and can never be stopped or reversed. The laws of physics dictate that time moves in a single direction, from the past to the future. This is known as the arrow of time, and it is a fundamental property of our universe.
However, it is worth noting that the perception of time can be altered under certain circumstances, such as extreme gravity or high speeds. This is known as time dilation, and it has been observed in experiments with atomic clocks and high-speed particles.
In short, while we cannot stop time, we can manipulate our perception of it to some extent. But ultimately, time will continue to move forward, and we must move with it.