Webb Space Telescope Launch Delays Continue

James Webb Space Telescope: Technical Challenges Have Caused Schedule Strain and May Increase Costs, GAO

"The National Aeronautics and Space Administration's (NASA) James Webb Space Telescope (JWST) project has made significant progress since GAO's last report in March 2019, such as completing testing of the observatory's individual elements and integrating them together in August 2019. However, new technical challenges have required the project to use more schedule reserve extra time set aside in the project's schedule to accommodate unforeseen risks or delays than planned. As of October 2019, the project had used about 76 percent of its available schedule reserve and no longer plans to launch in November 2020. The project is now managing to a March 2021 launch date but estimates only a 12 percent likelihood that this date will be achieved. NASA plans to reassess the launch date in the spring of 2020."

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