What is the difference between life in space and life on earth, which leads to the difference?

The space dining table is specially made. It is magnetic and can absorb knives, forks, spoons, bowls, plates and other tableware. The table is equipped with a water cooler and a heater. When eating, astronauts must first fix their feet on the floor and their bodies on the seats to avoid fluttering. Don't worry about the food on the table. You must pay attention to the coordination of a series of actions such as serving bowls, meals, opening your mouth and chewing.

Gently end the bowl, too hard, rice will float out of the bowl; It is necessary to be decisive in clamping rice and vegetables, to be accurate in clamping, and to clamp in clamping. It's best not to pull into the bowl, lest the food drift away. Forks are the best. When the food is caught, open your mouth and shut up.

Because if you don't shut up, even the food in your mouth will fly away; When chewing, the rhythm should be slowed down. Chewing slowly is beneficial to digestion, and it can also reduce the generation and excretion of waste gas in the body and avoid the pollution of astronauts' living environment.

2. Different activity spaces:

In fact, our living space will have a great impact on our own physiology and psychology, which is also a basic problem of manned space flight. So far, all manned spacecraft, including the space station, have provided enough space for astronauts. Facing the extension of space mission time, the space provided by spacecraft has become a problem.

Imagine what it would be like to stay in a small room surrounded by equipment for a long time. Because of this, aerospace engineers have limited the space that spacecraft need to provide for astronauts. These limits are formulated according to the tolerance of human psychology to space tasks. Generally, the longer the space mission, the more movable space is needed.

However, in actual flight, due to the influence of other conditions, the actual space may be slightly smaller than the theoretical space. For example, the cabin space of Mercury, Gemini and Apollo spacecraft in the United States is 1.53m3, 1.25m3 and 3.03m3 respectively.

3, the incidence rate is different:

Space motion sickness, also known as space sickness, is caused by the inadaptability of the human body in weightlessness, which is very similar to the usual motion sickness and seasickness of ordinary people. At first, it was epigastric discomfort, and then there was pallor, sweating, dizziness, dizziness, nausea and vomiting, but the symptoms would be obviously alleviated after vomiting.

Space motion sickness usually appears when a manned spacecraft enters orbit, and the symptoms disappear automatically after 2 to 4 days. However, don't think that space motion sickness is not a big deal. In fact, it is a big problem that is difficult to overcome for the development of manned space flight and space life science.

Due to the high incidence of space motion sickness, according to the data, nearly half of astronauts will suffer from this disease after entering orbit. The schedule of manned flight is very strict, and astronauts need to complete many important operations during this period after they are in orbit.

If motion sickness occurs at this time, it will more or less affect the completion of its space mission, and even affect the safety of manned space flight in serious cases. Secondly, the onset of motion sickness does not have certain regularity. Although people who take part in space flight for the first time will suffer from this disease, it will also happen to some astronauts who have been in the sky for many times, which will have an impact on the original flight plan.

4. Different sleeping positions:

Sleeping posture is very strange. In the weightless environment, people lose the reference coordinates of "up" and "down", their feet can't reach the ground, and the sky is all around them, so they can't tell up and down at all. Therefore, there is no such thing as lying flat when sleeping. Because you can sleep whether you are standing or lying down.

So astronauts can sleep in the capsule, hang it on the wall, tie it to the bed, hang it on the beam and lean on the table. In order to gain a sense of security, astronauts usually sleep in fixed beds or sleeping bags fixed on the wall. After the sleeping bag is tightened, it can exert certain pressure on the human body, so that people can eliminate the sense of panic.

5. Different ways to brush your teeth:

It is strange for astronauts to wash their faces and brush their teeth. In order to prevent water from floating everywhere, you usually wipe your face with a wet towel after washing. When brushing your teeth, rub your fingers in toothpaste for a few times, then clean your teeth with a wet towel, and you will finish brushing your teeth. If you brush your teeth like you are on the ground, toothpaste foam will fly around in the cockpit.