No, according to our current understanding of physics, light cannot go faster than its speed in a vacuum, denoted by the symbol "c" (approximately 299,792,458 meters per second). In different mediums, such as air, water, or glass, light travels at slower speeds than it does in a vacuum. The speed of light in a medium is determined by the refractive index of that medium, which measures how much the medium slows down the speed of light compared to its speed in a vacuum.
In any given medium, the speed of light is always slower than its speed in a vacuum. This reduction in speed is due to the interaction of light with the atoms or molecules in the medium. The precise speed of light in a medium depends on the optical properties and characteristics of that specific material.
It's important to note that while the speed of light can be slowed down in a medium, it cannot be accelerated to exceed its speed in a vacuum. The concept of light exceeding its maximum speed in any medium is not supported by our current understanding of physics.