What is faster than the speed of light?
What is a wormhole that can reach the edge of the universe in an instant? According to Einstein's theory, the speed of light, which is about 300,000 kilometers per second, is the limit of speed in our universe, and no matter how much mass can reach the speed of light, it can only be infinitely close to the speed of light, which means that all of our technology is limited to the speed of light. The development of the upper limit, that is, the spacecraft we have made, no matter how fast can not reach the speed of light, and the inability to reach the speed of light has given rise to a new problem - interstellar travel.