Why can't anything travel faster than light?
On June 30, 1905, 26-year-old Albert Einstein formulated the theory of special relativity, which states that light travels at a constant speed (c) in vacuum, nearly 3 lakh kmps. An objectâs relativistic mass increases as its speed increases, hence, on approaching 'c', the mass becomes so large that any amount of force cannot accelerate it to the speed of light.