According to our current understanding of physics, it is not possible to exceed the speed of light in a vacuum. The theory of special relativity, proposed by Albert Einstein, suggests that as an object with mass approaches the speed of light, its energy and relativistic mass increase significantly, making it more and more difficult to accelerate further. The energy required to accelerate an object with mass to the speed of light would be infinite, which is not achievable.
Additionally, as an object with mass accelerates closer to the speed of light, its relativistic mass would become infinitely large, and its length would contract to zero. These effects would violate fundamental physical principles and result in various paradoxes and inconsistencies.
It's important to note that there are speculative theories and concepts, such as wormholes, warp drives, or other hypothetical phenomena, that have been proposed in science fiction or within some speculative physics frameworks, which suggest the possibility of faster-than-light travel. However, these concepts are purely speculative and largely remain in the realm of science fiction or hypothetical scenarios, as they are not currently supported by empirical evidence or widely accepted scientific theories.
For now, our current understanding of physics suggests that the speed of light in a vacuum is an ultimate cosmic speed limit, and it is not possible to overcome this barrier.