NASA moved the space shuttle Discovery to its launch pad on Thursday in preparation for its next mission in just under a month. Discovery arrived at launch pad 39B after 9 a.m. EDT on Thursday, a little less than nine hours after leaving the Vehicle Assembly Building. Discovery is scheduled to launch on mission STS-116, an ISS assembly flight, on the evening of December 7, 2006. The shuttle crew will deliver a third truss segment, a SPACEHAB module and other key components to the International Space Station.