The scene of Shenzhou 14 getting out of the cabin is shocking! But why can't you see stars in space, it's completely black?
At present, the Chinese space station is in the stage of full-scale on-orbit construction. The three astronauts Chen Dong, Liu Yang and Cai Xuzhe of Shenzhou 14 have been in space for nearly three months. After the arrival of the Wentian experimental module, the astronauts have more space for activities. The sleeping area has been increased to 6, and in the future, up to 6 astronauts can live and work in space for a long time. In addition to more sleeping areas, the Wentian experimental cabin also brought a life ecology experimental cabinet, and the Shenzhou 14 astronauts also carried out rice planting experiments in space. Imagine that in the future, after our astronauts land on the moon, Mars and even more distant planets, we will grow rice on the alien world and get a bumper harvest. It will be a very wonderful thing. After a series of preparations in the early stage, the astronauts of Shenzhou 14 carried out the first outing of this mission. Different from the previous missions of Shenzhou 12 and 13 astronauts, this time, Shenzhou 14 astronauts opened the cabin door from the weather lock cabin for the first time and entered space. With the perspective of astronauts Chen Dong and Liu Yang out of the cabin, we have seen a shocking space scene. The astronauts and the space station are suspended in space, and even the earth is suspended in space, and there seems to be no place to support it. Around the space station and the earth, there are continuous dark spaces, and the deep space looks extremely awe-inspiring. So why does space appear to be completely black and no stars appear? Regarding this issue, the first person to leave the cabin in my country has already described it. Whenever we talk about escaping activities, we can never get around the "king of space stalkers", that is, my country's first astronaut to perform a spacewalk: Zhai Zhigang. In space, astronauts spend most of their time in space capsules. But to talk about an immersive experience in space, you still have to see the activities of the capsule. Astronauts wear extravehicular space suits and enter space, and they are immersed in the scene. How does that feel? In the pictures of the astronauts' outing activities that we have seen before, the background is pure black, and only the dazzling sun and the earth can be seen. Logically speaking, space should be full of stars. So, what will the astronauts see when they get out of the cabin? In 2008, Zhai Zhigang flew into space on the Shenzhou 7 manned spacecraft. One of his important tasks was to carry out the first outboard activity in the history of my country's spaceflight. As the first "crab eater" in my country, Zhai Zhigang experienced unprecedented shocks, both visually and sensually. Zhai Zhigang recalled that when he first got out of the capsule, he was shocked by the universe. He looked into space and didn't dare to move because he saw the bottomless space. Although space is extremely deep, it is not absolutely black, but clear and transparent, full of stars. But unfortunately, following the perspective of the astronauts, we did not see the sky full of stars. This is actually because of the problem of camera shooting. Because the astronauts, space station, and the earth are very bright under the sunlight, far brighter than those dim starlight, so the camera can only control the amount of incoming light, so that the captured picture Don't overexpose, and as a result, those dim starlight won't be captured. In fact, this phenomenon can also be verified with a simple experiment on Earth. This is the author shooting the moon with an astronomical telescope: you can see that if the moon is exposed normally, the surrounding area looks black. And if you increase the amount of light and let the moon be in a state of overexposure, you can see several background stars near the moon, and they look much dimmer than the moon. In short, when astronauts leave the cabin, they can see a very shocking cosmic scene, which can be said to be a special gift from the universe to astronauts. During the Shenzhou No. 12 mission, when Liu Boming got out of the cabin, he also called out, "Wow! It's so beautiful outside!", which made up for his regret that he didn't go out to see for himself when he was on Shenzhou No. 7. On Shenzhou 7, Zhai Zhigang made his first out of the cabin, and Liu Boming cooperated closely throughout the process. It can be said that the first time out of the cabin was difficult. They first encountered the unexpected situation that the cabin door was difficult to open, which was not encountered during training. With great effort, the two astronauts finally opened the hatch with a crowbar. Then, the orbital module suddenly sounded the fire alarm, which instantly made the scalp tingle. In addition, shortly after, the spacecraft flew out of the measurement and control area again, which made the ground flight control center fall into silence. After the communication was restored, the astronaut's conversation was heard: Liu Boming: Go on! Zhai Zhigang: I understand! Liu Boming: It's too late to catch fire, don't care! Zhai Zhigang: It's done! After overcoming these difficulties and obstacles, Zhai Zhigang successfully waved a Chinese flag in space, letting the five-star red flag fly in the vast space. Years later, Zhai Zhigang and Liu Boming's eyes were always full of light when they talked about the feeling of their first mission out of the cabin. The experience of that time made them unforgettable.