Interstellar navigation needs advanced science and technology. Can human beings achieve it in a hundred years?

It's entirely possible. Mankind is currently in the exploration period of the space age. Interstellar navigation needs many advanced technologies to make a breakthrough, which can be realized in hundreds of years, but it takes thousands of years to be slow. It took 100 years from the invention of the steam engine to the appearance of the automobile, and 100 years from the appearance of the airplane. It took more than 50 years for human beings to go into space. The next step is to land on other planets, establish permanent bases, and then realize interstellar navigation and fly out of the solar system.

At present, it is no problem to build large spacecraft, but the cost is too high. Moreover, the current space thrusters all use chemical fuels, making it difficult to achieve long-distance space navigation. In order to realize interstellar navigation, human beings must first solve two major problems, one is efficient propeller, and the other is energy supply. Propeller chemical thrusters rely on chemicals to release a lot of energy to propel spacecraft, but chemical combustion requires a huge amount of fuel and oxidant, which greatly increases the weight of spacecraft; For example, Apollo series spacecraft carry more than half of the total weight of fuel.

Chemical fuel can help us leave the earth, but it is far from enough to achieve interstellar travel. At present, all countries in the world are vigorously developing controlled nuclear fusion technology. Once it is realized, the energy problem of mankind will be completely solved. The first problem is energy, which is actually the energy used by modern rockets to produce fuel per unit mass. It can accelerate the aircraft below 10 ton to the maximum speed of tens of kilometers per second, enough to fly out of the earth. If interplanetary navigation depends on chemical energy, the whole universe will not burn enough. The new energy technology that human beings are trying to conquer is also the productivity model of stars. If humans master the controlled nuclear fusion, it is equivalent to mastering the solar power of 1kg and the hydrogen fusion capacity of 2.6206x 10∧ 15J energy. If the efficiency of the nuclear engine is 40%, the aircraft accelerates to 1/30c. The mass ratio of fusion fuel to spacecraft is about110, so it is necessary to slow down, so it is about 1/5, that is, 20 tons of fuel can accelerate 100 tons of spacecraft to 1/30c and slow down to zero. If human beings develop hibernation technology, nuclear fusion can be used as an energy source for interstellar navigation.

Then, controlled nuclear fusion technology is improved and installed on the spacecraft, which can meet the needs of a spacecraft's long-distance interstellar navigation, and even allow human beings to walk out of the solar system and realize interstellar migration.