2 ms·

Here is a nice table with the history of the budget: https://en.wikipedia.org/wiki/James_Webb_Space_Telescope#Cost_and_schedule_issues https://en.wikipedia.org

• slownews45 5y ago
  Clicking through we get this "JWST is now estimated to cost approximately $9.7 billion and launch in October 2021, which represents cost growth of 95 percent and 88 months of schedule delays since the project’s cost and schedule baselines were first established in 2009." So around $10B. Amazing.
  • elihu 5y ago
    I wonder what the marginal cost would be to build a second one?