As a science lover, if the subject knows Einstein's theory of relativity, he should know that nothing in this universe can travel faster than the speed of light; The speed of light is the fastest thing in the universe, 300 thousand kilometers per second. According to the above calculation, flying 47 billion light years in 30 years requires at least 6.5438+0.8 million light years per hour and 500 light years per second! In other words, it takes a beam of light to fly a distance of one second for five million years! ! !
At present, the most advanced technology of mankind is nothing more than launching missiles and rockets, and the fastest speed is only four or five times the speed of sound. In the face of the vast cosmic scale, human beings are just children crawling in their own yards. The setting of flying 500 light-years per second has completely violated the known laws of the universe, and there is no point in discussing it.
Of course, in all kinds of science fiction, there are all kinds of curvature engine spacecraft that can jump in space, wormholes that can span the whole universe instantly and so on. In the famous writer Liu's science fiction novel "Three-body", the spacecraft escaped from the two-dimensional solar system by virtue of the curvature engine and survived by leaping halfway across the universe. A few years ago, there was a sci-fi movie, Interstellar, in which the hero was able to travel through the whole universe by relying on a wormhole next to Jupiter. After several generations, he is still so young and handsome.
Curvature engine, wormhole crossing and other means. , basically just imagination, without the support of scientific theory. Judging from the current level of scientific development of mankind, it may not be technically possible for hundreds of thousands of years. In this way, flying 47 billion light years and crossing half the universe in 30 years is completely science fiction.