WISE Launch Delayed 24 Hours

December 10, 2009
WISE is shown inside one-half of the nose cone, or fairing, that will protect it during launch. The spacecraft is clamped to the top of the rocket above the white conical fitting. The fairing will split open like a clamshell about five minutes after launch. Image credit: United Launch Alliance/ JPL-Caltech

(PhysOrg.com) -- Liftoff of a Delta II rocket and its NASA payload, the Wide-field Infrared Survey Explorer (WISE), has been delayed 24 hours. At the soonest, launch now will be Saturday, Dec. 12, during a launch window that extends from 6:09:33 to 6:23:51 a.m. PST (9:09:33 to 9:23:51 a.m. EST).

The delay allows the launch team additional time to troubleshoot a technical issue. During final systems checks of the Delta II rocket Wednesday in preparation for flight, an anomaly in the motion of a booster steering engine was detected.

The weather forecast for Dec. 12 calls for thick clouds, disturbed weather and precipitation, resulting in an 80 percent chance of conditions preventing .

and mission managers will discuss the and liftoff status during meetings today. Updates to the WISE mission status will be issued as new information becomes available.

The WISE spacecraft will circle Earth over the poles, scanning the entire sky one-and-a-half times in nine months. The mission will uncover hidden cosmic objects, including the coolest stars, dark asteroids and the most luminous galaxies.

Provided by JPL/NASA (news : web)

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