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28-Jun-03 | Opportunity scrubbed

Scrub! The first launch attempt for MER-B Opportunity has been called off. Rain and clouds that threatened all evening cleared up enough for both instantaneous launch windows, but other environmental factors led to a 24-hour turnaround. The first launch window was missed when the ground level wind direction forced the Range to call a “no go” due to the potential for toxic fumes to blow into populated areas in the event of a mishap at the pad. (A wayward boat in the hazard zone didn’t help.) The second launch window was lost when a weather balloon detected an excessive wind shear at altitude. Weather for the next two evenings is improving, with a 30% chance of constraint violation each night.

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