Share the news to friends and circles of friends with wechat scanning QR code < / P > < p > on January 4. On Monday, local time, NASA said that the deployment of James Webb Space Telescope was smooth, and the first layer of sunshade had begun < p > < / P > < p > nine days have passed since the launch of the Weber space telescope. NASA said that on Monday, the six motors on the Weber space telescope began to fully unfold the first of the five sunshades. The expanded area of these sunshades is the size of a tennis court. They are made of a polyimide film called Kapton. They will block the sunlight for the instruments carried on the space telescope and cool them to minus 223 degrees Celsius, only 50 degrees higher than absolute zero. This environment is very important for the Weber space telescope to detect infrared and observe the thermal radiation of distant objects < p > bill Ochs, director of NASA's Weber project, said that the first of the five sunshades will be fully launched on Monday. The overall goal is to launch the other four layers of sunshades on Tuesday and Wednesday < p > on Monday, oaks said about the next few days: "I don't expect anything dramatic to happen." < p > according to the current progress, NASA will roughly complete the deployment as planned. It is understood that the Weber space telescope must undergo 344 operations from launch to instrument commissioning, and any single point of failure may destroy the telescope. Oaks said that after unfolding the sunshade, it means that the Weber Space Telescope has successfully solved "70% to 75% of the problems" < p > other unfinished main operations are to deploy the secondary mirror support structure and expand the secondary main mirror wing. All this work can be finished by the end of this week < p > although the Weber space telescope will not start scientific observation until the middle of this year, NASA engineers and thousands of scientists can breathe a sigh of relief with the completion of the deployment. It took the Weber space telescope 20 years to go into space. In less than 20 days, the telescope was deployed successfully or failed, which can be called "benevolence without success" < p > since the launch of the Ariane 5 rocket carrying the Weber space telescope, the engineers and scientists of NASA and the main contractor Northrop Grumman have been working in shifts. Amy lo, a calibration engineer for Northrop's Weber space telescope, said the team worked on two relatively minor issues throughout the weekend < p > the first problem is the performance of the 6m wide solar array. Although the Weber Space Telescope has never been "out of power", Luo said that the original arrangement of five solar panels has proved not to be the best. She said that in order to achieve maximum power generation, the team rebalanced the solar array and is now operating as expected < p > another potential problem involves the operation of six motors during the deployment of the sunshade. At first, the motor "ran a little hot", Luo said, but after readjusting the operating attitude of the space telescope, the motor temperature reached 53.85 degrees Celsius, far below the operating limit of 66.85 degrees Celsius. Luo said she hopes the motor will remain within the temperature limit in the next three days. (Chen Chen) < / P > < p >