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08-Sep-11 | Scrub!

A strong shear in the upper level wind conditions has led to a 24-hour turnaround for NASA’s Gravity Recovery And Interior Laboratory (GRAIL) mission to the Moon. The next launch opportunity is on Friday, 9 September, with two instantaneous launch windows at 12:33:25 and 13:12:31 UTC.

Update: Friday’s attempt has been postponed “to allow additional time to review propulsion system data from Thursday’s detanking operation.” Launch windows for Saturday, 10 September, are 12:29:45 and 13:08:52 UTC. The weather report for that day gives a 60% chance of conditions favourable for launch, an improvement over Thursday and Friday’s 40%.

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