Musk predicts mid-December return to flight for Falcon 9 - the 'puzzle' has been solved.
Musk: “I think we’ve gotten to the bottom of the problem”. “It was a really surprising problem. It’s never been encountered before in the history of rocketry.” “So that’s why it took us a while to sort it out.” “This was the toughest puzzle to solve that we’ve ever had to solve.” “It looks like we’re going to be back to launching around mid-December”.
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