1. Name of work Roaming Space, Experience Astronautics 2. Needs analysis (1) the popularity of space knowledge is low By setting up a series of questionnaires and combining with social research, we found that people's understanding of China's aerospace knowledge is generally less, and the basic information of China's aerospace, main tasks, national policies, aerospace goals, aerospace strength and other series of knowledge in the national popularity is low. As shown in the figure, it can be seen that there are only a few people who have a high degree of understanding of China's aerospace, manned missions and even the recent Shenzhou XII manned space mission. Therefore, the basic popularity of aerospace knowledge among the people is very low. The degree of understanding is also very small, so it is also very important to spread aerospace knowledge. In response to this phenomenon, we designed this work, we hope to make more people aware of China's space-related work and knowledge, space missions and other knowledge in a relaxed and interesting form, and spread and popularize space operations that are not normally accessible to the masses. (2) Low overall acceptance of space information in the Internet era Now with the development of the Internet, information is transmitted very quickly. Just like the launch of the Shenzhou 12 manned spacecraft, relevant news can be seen everywhere on major websites and social media. We also found in social surveys that most people understand Space is based on fast media, and after seeing the news about aerospace, almost the vast majority of people's choices are not too much understanding, therefore, while people have gained the convenience of quickly obtaining information, it also makes it impossible for people to truly and carefully understand the specific content. Therefore, in view of this situation, we hope that people can actively choose space knowledge rather than passively accept it. (3) Space science nature of the software or game is not rich Through investigation, we found that the existing software or game types about aerospace knowledge in the market are barren, and most of them are mainly designing rockets and rocket mobile games. After practical application, we found that most of these software are mainly for playing, with less experience, and the aerospace knowledge that can be learned is very limited. Based on this situation, we hope to create a strong sense of experience, and in the experience can be a wide range and interesting harvest of space knowledge of the game. Similarly, it is suitable for players who do not know much about space knowledge, teenagers who are full of interest in space astronauts, and adults who are aware of China's space mission in 2021. What we hope to achieve is that in the face of our players, we can let all players understand the space work process and tasks of our country through the knowledge learning in the middle of the interest game in the early stage, and can truly experience how astronauts carry out a series of activities in space, learn the history of China's space development, and understand how many difficulties and challenges our country has faced in order to reach the existing space height, how many people have made efforts behind their backs to give everyone a more comprehensive understanding of China's aerospace. 3. Function module and interface design (1) Put on the spacesuit This module includes three parts: players can choose different styles and types of spacesuits, basic knowledge explanation and question and answer. Players can choose the newly developed flying spacesuits and in-cabin overalls in China, or other countries such as Apollo 11 outings and NASA spacesuits. We use maya to model and map these different styles and types of spacesuits in three dimensions. On the basis of voice prompts, players can select spacesuits and place them in the booth through the mouse, and carefully observe spacesuits from different directions and angles. After the selection is completed, players will learn the knowledge related to spacesuits and conduct quizzes. We hope that players can learn the knowledge related to spacesuits while realizing interactive experience and independent selection. (2) God 12 sets sail As the central module, the module of Shenzhou 12 Sailing includes the overall process of the entire Shenzhou 12 manned mission, including take-off, docking core module, space station penetration module, sky-earth call and exit mission. The model includes the launch pad, Shenzhou 12, space station and robotic arm, all of which are modeled and mapped by maya and rendered in unity. First of all, the first part of the players arrived at the take-off interface. Under the voice reminder, the players need to open the articulated device of the launch pad and then control the launch of Shenzhou 12. When reaching a certain height, Shenzhou 12 will enter the space route. Players need to operate Shenzhou 12 to follow the established route and complete the tasks of shedding booster, shedding core level 1, shedding core level 2, shedding fairing and escape tower under voice prompts. We can learn knowledge in the process of the game by allowing players to control Shenzhou 12 autonomously, by allowing players to operate by themselves, they can more truly understand and experience the whole process of Shenzhou 12 launch, and know the specific structure of Shenzhou 12 manned spacecraft. The second part of the players will follow Shenzhou 12 into space, where players need to control Shenzhou 12 to complete the docking with the space station. Players can observe the position of Shenzhou 12 and the space station in a large range on the main interface and carefully observe the fit position of Shenzhou 12 and the space station to realize docking. The third part of the players will enter the interior of Shenzhou 12 after docking with the space station. The first place for the players is the return capsule. After receiving the voice guide, the player will independently complete a series of actions to wear the cabin. At the same time, when entering different positions, there will be a voice explanation to tell the player the position of the current cabin and related knowledge. At the same time, players can also click on the points of related items such as space bicycles, space kitchens, sleeping bags, etc. to learn more detailed knowledge. When the player arrives at the computer location, it will automatically trigger the task of making a call between heaven and earth. The player can complete the call with General Secretary Xi Jinping like an astronaut in space. Players need to independently open the hatch from the return module and enter the orbital module, node module, small column section of the sky and core module, and large column section of the sky and core module one by one. Then the player will return to the node module with the help of guidance to perform the extravehicular mission of the twelve astronauts. The player needs to move out of the module to the specified point and realize the movement of the mechanical arm. Finally, the player will return to the node module after completing the extravehicular mission and then can choose to ask the sky experimental module and dream sky experimental module to continue to wear the module. In this module, we hope to enable players to truly experience the life, actions and tasks of astronauts in the cabin, learn during the experience, understand the overall process of astronauts in the cabin, and observe the specific structure of the Chinese space station from a space perspective. And in-cabin facilities. (3) History of the Star River In the historical galaxy module, we take the schedule of major events in China's space development as the historical river and its time point. Players can roam in this historical galaxy and watch and learn about the events and pictures of milestone events in China's space. When players click on the event picture, they will play the video materials left at that time on the TV. After watching, knowledge explanation and question and answer will pop up. (4) my space report As the last part of the whole game, my space report module summarizes the whole process of the player as an astronaut in the roaming game. corresponding to the module of putting on a space suit, the player will be able to upload a photo by himself. the generated space report includes his photo, the player's experience and the knowledge explanation of space missions and astronauts, so that the player can understand the struggle of real astronauts and the prosperity of the country.