According to our current understanding of physics, there is a universal speed limit known as the speed of light, denoted by "c." In a vacuum, the speed of light is approximately 299,792,458 meters per second (or about 186,282 miles per second). This speed is incredibly fast, and it plays a fundamental role in the theory of relativity proposed by Albert Einstein.
According to the theory of relativity, as an object with mass 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. This means that objects with mass, such as particles, spacecraft, or even information, cannot travel at or exceed the speed of light.
However, it's important to note that the theory of relativity does allow for particles without mass, such as photons (particles of light), to travel at the speed of light. Light itself is composed of photons and travels at this maximum speed in a vacuum.
So, in summary, according to our current understanding of physics, objects with mass cannot travel at the speed of light, but particles without mass, like photons, can achieve and travel at that speed.