Atlantis launch delayed to January

NASA's Mission Management Team has delayed launch of the shuttle Atlantis on a critical space station assembly mission to at least Jan. 2 to troubleshoot intermittent electrical problems with low-level hydrogen fuel sensors that derailed launch attempts Thursday and again today. The shuttle's current launch window closes Dec. 13 because of space station power and temperature issues related to the lab's orbit. The window reopens Dec. 30, but NASA managers do not want to conduct a launch campaign during the end-of-year rollover because of countdown software issues. More

(Source: Spaceflight Now - Dec 9)