Rumors:
Some friends believe that there is no air in space and sound cannot be transmitted. Astronauts should not hear any sound in the space station .
truth:
is actually just the opposite.
For example, when teaching in Tiangong Classroom , if you listen carefully, you can find the sounds of various equipment operating.
Tu Chong Creative
It turns out that space itself is very quiet, but in order to ensure the normal work and life of the astronauts, the space station needs various system support, such as ventilation and purification in the cabin, which requires the fans to keep running. This will Produce a certain amount of noise. In addition, other equipment such as the operation of space experimental instruments, ventilation and heat dissipation, pumps, motors, electric valves, etc. will also produce a certain amount of noise. When the space station changes orbit, the engine operation will also produce noise. Astronauts also generate noise when moving inside the cabin.
If astronauts work in a noisy environment for a long time, it will not only affect their work efficiency, but also may endanger their health. Therefore, it is necessary to deal with the noise problem when designing the space station. Astronauts sometimes use devices such as earplugs and noise-cancelling headphones to reduce noise.
From this point of view, although the daily life of astronauts in space is very wonderful, there are also many difficulties. I wish our three astronauts will complete the mission as soon as possible and return safely and have a good rest.
(Source: Popular Science China)
