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On September 9, NASA announced that the launch date of the James Webb Space Telescope was postponed again. At present, the finalized launch date of the telescope is December 18 this year < p > < / P > < p > it is reported that the James Webb Space Telescope, named after the second director of NASA, will replace the Hubble Space Telescope with an observation mission at a cost of $8.8 billion. The 18 hexagonal gold-plated mirrors installed in Weber Space Telescope enable it to observe distant celestial bodies in the universe, and its data acquisition ability is much higher than that of Hubble Space Telescope The Weber space telescope was originally scheduled to be put into use in 2007, and the astronomical community has been looking forward to the launch of the telescope for many years. However, development challenges and cost overruns have led to repeated delays in the telescope plan, and R & D has been hindered. Northrop Grumman, the main contractor of NASA and Weber space telescope, initially set a budget of $1 billion for James Weber and is scheduled to launch sometime in 2007. However, it was not over until 2011, and the launch date of the telescope was postponed to 2018. In addition, accidents in the development of the telescope pushed up the cost, and the launch date continued to be postponed. Earlier last year, NASA's inspector general predicted that various technical challenges would continue to delay the launch of the telescope. The epidemic led NASA to postpone the launch date to October 31 this year < p > NASA again postponed the launch date to December 18. But this delay has nothing to do with the telescope itself. The main reason is that the Ariane 5 rocket carrying out the launch mission of the Weber Space Telescope has actually been grounded for nearly a year because of problems with the payload fairing. In 2020, technicians detected this problem of rockets in two commercial missions. In July this year, Ariana 5 rocket successfully sent a number of satellites into space again. That month, NASA's partner in the Weber Space Telescope project, the European Space Agency, approved the latest launch plan of the Weber space telescope through a key review. The European Space Agency said at the time that the launch project showed "positive results" in the technical evaluation < p > NASA said that the new launch date was determined after consultation with Ariana space company of France. The Ariane 5 rocket will launch the telescope into space from the launch site in kuru, French Guiana. At the end of last month, the Weber Space Telescope completed its final ground test and has now entered the transportation process. Before sending the telescope to kuru, engineers will put it in an expensive custom container < p > although the Weber Space Telescope finally has a new launch date, for security reasons, the exact time when the telescope will go to South America is still confidential. (Chen Chen) < / P > < p >

2023-03-22 10:04:43