Watch 4th Spacewalk Live Tonight

Watch 4th Spacewalk
* LIVE Tonight *
On NASA TELEVISION
Thursday evening, March 20, 2008
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Behnken and Foreman are slated to begin the mission’s fourth spacewalk at 5:28pm CDT Thursday. The two will perform tasks that include a shuttle tile repair test and change out of a circuit breaker on the station.

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As the docked International Space Station and Space Shuttle Endeavour continue their joint trek around the Earth, STS-123 Mission Specialists Robert L. Behnken and Mike Foreman prepare to step out of the station’s Quest airlock into the void..

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The fourth STS-123 spacewalk is slated to begin at 5:28 p.m. CDT. With Mission Specialist Rick Linnehan working inside the orbiting complex to coordinate their activities, the two spacewalkers will replace a failed Remote Power Control Module – essentially a circuit breaker – on the station’s truss.

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The spacewalkers also will perform the primary task of that spacewalk, which is the test of a heat shield repair method. This technique uses a caulk-gun-like tool named the Tile Repair Ablator Dispenser to dispense a material called Shuttle Tile Ablator-54 into purposely damaged heat shield tiles. Once the test is complete, the sample tiles will be returned to Earth to undergo extensive testing on the ground.

Info taken from the NASA.gov website

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* Out on a Limb *
About Photo: Anchored to a Canadarm2 mobile foot restraint, astronaut Rick Linnehan participates in the mission's first scheduled spacewalk. During the seven-hour spacewalk, Linnehan and Expedition 16 flight engineer Garrett Reisman prepared the Japanese logistics module-pressurized section for removal from Endeavour's payload bay and installed the tool change out mechanisms on the Canadian-built Dextre robotic system, the final element of the station's Mobile Servicing System.
Image Credit: NASA
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Read Latest News and Updates +
Mission Elapsed Time Clock
at NASA.gov

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Watch the Spacewalk Live HERE
ENJOY!!!

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* View STS-123 Interactive Timeline - Here *

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UPDATE...
Mission Specialists Robert L. Behnken and Mike Foreman completed the fourth STS-123 spacewalk at 11:28pm EDT, spending six hours and 24 minutes on the excursion.
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Note: Behnken and Foreman will begin the mission’s fifth and final spacewalk Saturday at 4:23pm CDT. Among other tasks, they will stow the Orbiter Boom Sensor System on the station’s main truss to be retrieved by the crew of Discovery on STS-124, the next space shuttle mission.

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I’ll be posting on the Fifth and final Spacewalk Saturday so check back!!!

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GOD SPEED to the Crew of STS-123 Endeavour...
AubreyJ.........