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Advantages Of Interstellar Travel

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The possibility of interstellar travel

Many people or even scientists claimed that interstellar travel is impossible. They argue that it may take a spacecraft too much time to accelerate to a speed close to the speed of light. Some people think other stars are too far, and it may take hundreds or thousands of years to reach them. However, as we will show, these arguments don’t rule out the possibility of interstellar travel. In contrast, there are possible method to travel to very far object in a person’s life. We don’t consider some possible but still very unrealistic technologies like twisting spacetime.

Interstellar objects are very far. The closest star except the sun is Proxima, with a distance of 4.27 light years. Many stars have a distance of hundreds or thousands of light years. Some people think it impossible for a spacecraft to reach these stars because any object cannot travel faster than light. 100 years is required for light to reach an object that is 100 light years away, and it will take even more time for a spacecraft to reach the object. However, the argument above doesn’t take relativity into account. There are two different reference frame for us to understand this problem. First, for people live on earth, the time of an astronaut in the spacecraft will slow down in such a high speed. For example, assume that a spacecraft travel at a constant speed of 0.99c, and a star is 42 light years away as seen from the earth. People live on earth think the

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