No, an asteroid cannot travel at the speed of light. According to the theory of relativity in physics, the speed of light in a vacuum is considered the universal speed limit. The speed of light in a vacuum is approximately 299,792,458 meters per second (or about 186,282 miles per second). This speed is incredibly fast, and no object with mass can reach or exceed it.
Asteroids are celestial objects that typically orbit the Sun and range in size from small rocky fragments to larger bodies several kilometers in diameter. While asteroids can travel at high velocities, their speeds are nowhere near the speed of light. In our solar system, typical asteroid velocities range from a few kilometers per second to tens of kilometers per second, depending on their orbital characteristics and interactions with gravitational forces.
To achieve the speed of light, an object with mass would require an infinite amount of energy, according to our current understanding of physics. Therefore, it is not possible for an asteroid or any massive object to attain or exceed the speed of light.