Share the news on September 7 with wechat scanning QR code < / P > < p > to friends and circles of friends < / P > < p > according to foreign media reports, under normal circumstances, the communication delay between the crew of the international space station and the ground is almost undetected. But as NASA prepares to explore the moon and even distant Mars, the communication delay from earth will last longer. To deal with this problem, astronauts are trying to use augmented reality (AR) technology to help repair the facilities on the international space station& nbsp; < p > < / P > < p > in the project called t2ar, astronauts are trying to inspect and maintain the international space station without the assistance of a ground team, including scientific and exercise equipment that is crucial to maintaining the health of the crew and achieving research objectives. Recently, Japanese Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi used AR technology to maintain the T2 treadmill treadmill, an exercise equipment on the space station < p > the inspection program is usually provided in the form of PDF documents, which can be accessed on a computer or tablet, but it may be difficult to view these documents when operating tools, flashlights or inspection devices in a narrow space. In the latest attempt, Noguchi used Microsoft ar glasses hololens and equipped with a new program tracking software developed by NASA, and completed the relevant work according to the relevant tips < p > t2ar is the first time hololens has been combined with customized ar software, enabling astronauts to maintain and inspect the main crew support hardware without assistance. This demonstration uses 3D direction cues to guide the astronaut's line of sight to the appropriate workplace, and shows the program description. The device follows the oral instructions of the astronauts, navigates the program, and displays ar prompt and program text on the hardware according to the program steps being executed. The system also provides supplementary information, such as instructional videos and system coverage, to help execute the program < p > Bryan dansberry, associate scientist of the international space station, said: "the AR tool is expected to provide us with guidance and expertise in advance. The space station is the perfect platform for testing AR systems and improving these tools so that future astronauts can be prepared in advance when they need them. On earth, these tests also help test software and AR technology, and can provide expertise and support to remote areas around the world. " < p > although this demonstration is currently limited to treadmills, t2ar is designed to meet the repair needs of various space stations in the future, so as to improve the efficiency of crew and the accuracy of activity execution. In addition to being used on the space station, this technology can also help astronauts travel to the moon and Mars in the event of greater communication delays in the future, because they can perform missions without waiting for further instructions from earth（ Small) < / P > < p >