The speed of light is 299,792,458 meters per second in a vacuum.
According to our current understanding of physics, nothing can travel faster than the speed of light.
The speed of light is considered a universal speed limit because it is the maximum speed at which information can travel in the universe. Any object that travels faster than the speed of light would violate the laws of causality and lead to paradoxes.
The theory of relativity, proposed by Albert Einstein, states that the laws of physics are the same for all observers moving at constant velocities. This theory also includes the famous equation E=mc², which shows the relationship between energy and mass. The theory of relativity explains why the speed of light is a universal speed limit and how it relates to the fabric of space-time.
While nothing with mass can travel faster than the speed of light, there are some phenomena that can seem to move faster than light. For example, the expansion of the universe can cause objects to appear to be moving away from us faster than the speed of light. However, this is not actually a violation of the speed of light limit, as space itself is expanding.