Light on a spaceship traveling at the speed of light If a forward beam of light and a backward beam of light are emitted from a spaceship flying at the speed of light, what are their respective speeds? If the forward beam of light flies at the speed of light, then it is the same as the speed of the spaceship. In this way, people behind the spaceship can not see what they are doing in front of them?

Light on a spaceship traveling at the speed of light If a forward beam of light and a backward beam of light are emitted from a spaceship flying at the speed of light, what are their respective speeds? If the forward beam of light flies at the speed of light, then it is the same as the speed of the spaceship. In this way, people behind the spaceship can not see what they are doing in front of them?

According to the knowledge of relativity, no matter what frame of reference is chosen, the speed of light is always constant. The speed of light relative to spaceship is a unit speed of light, and the speed of front light relative to back light is also a unit speed of light. This seems to contradict our daily knowledge, but in fact, in the case of high speed (close to the speed of light), we have a lot of physical knowledge and experience obtained in the case of low speed, which are not applicable
In the case of light speed, people on the spaceship do not see the spaceship and light at the same speed. But people in a static reference frame outside the light speed reference frame can see that the forward light and the spaceship are synchronized, and the backward light and the spaceship are far away at the speed of light. People in the spaceship can see each other in the opposite direction
In general, if you don't understand it, you can study general relativity