Wang Yaping successfully left the cabin for the first time. How beautiful is the earth from space?

The ultimate goal of manned space activities is to help mankind leave the home of the earth. From this point of view, manned space exploration activities without women's participation are incomplete, and female astronauts are an indispensable part of manned space engineering. Wang Yaping became the first female astronaut in China to carry out extravehicular activities, and took the first step in the extravehicular activities of women in China. Shooting in space is not easy. It not only needs shooting equipment and photography technology adapted to the space environment, but also needs good shooting opportunity and luck.

Space photography is limited by light, weather and atmospheric cloud conditions. It needs to deal with very bright, very dark and high contrast exposure environment. There is no atmosphere in space, light will not be refracted, and the sky area of the cosmic background is all black. The orbit position of spacecraft is relatively fixed, the angle of porthole and outboard position for shooting is relatively limited, and the running speed is fast, which puts forward stricter requirements for shooting methods.

We can not only see the expansion of cities and the decrease of natural resources, but also see that in a negligible corner of the world, some people have opened up a world for wildlife. On the International Space Station, meat and bread are usually processed in this way. Japanese can't forget Lamian Noodles anywhere, and Koreans can't forget kimchi anywhere. They made kimchi and instant noodles into irradiated food, that is, irradiated with high-dose gamma rays.

The processed food can be preserved for a long time without destroying the original nutrients. To supplement the various nutrients that astronauts need. After all, the space environment is different from the ground environment. They have high requirements for radiation. Therefore, it is necessary to increase the content of natural antioxidants in food, such as procyanidins and antioxidants. -3 fatty acids, even plant dietary fiber, prevent or improve radiation damage. Food is the most important thing for people on the ground, and it is the same in space. Eating has always been a top priority. ?