The concept of accelerating an object with mass to the speed of light is not currently feasible due to our understanding of physics. According to the theory of relativity, as an object with mass approaches the speed of light, its relativistic mass increases, requiring an infinite amount of energy to reach that speed. This is known as the mass-energy equivalence principle.
Additionally, as an object's speed increases, its relativistic effects become more pronounced. Time dilation, length contraction, and an increase in energy requirements are some of the consequences of moving at relativistic speeds. These effects present significant challenges and limitations to achieving such velocities.
Furthermore, the amount of energy required to accelerate even small objects close to the speed of light is currently far beyond our technological capabilities. The Large Hadron Collider (LHC), for example, can accelerate subatomic particles to velocities close to the speed of light but falls significantly short of reaching that ultimate speed.
In summary, while it is theoretically possible to accelerate an object to the speed of light, our current understanding of physics and the technological limitations involved make it highly impractical, if not impossible, to achieve this feat. Scientists continue to explore and push the boundaries of our knowledge, but it is unlikely that we will see objects with mass traveling at the speed of light in the near future.