stoolpigeon writes "The space shuttle Endeavour was rolled out to Launch Pad 39B yesterday. Space shuttle Atlantis is already at Launch Pad 39A, being made ready for the STS-125 mission to repair Hubble. We recently got a look at some behind-the-scenes photos for this mission. Endeavour is now in place to act as a rescue vehicle if there are any problems with Atlantis, once they are in space. This is the first time one shuttle has been prepared to act as a rescue vehicle for another. If all goes well for STS-125, Endeavour will move over to 39A to be used for STS-126."
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