NASA delayed the launch of STS-122 Atlantis until January 2, 2008 as a fuel sensor in the external fuel tank showed the same glitch that prompted the initial delay on Thursday. This type glitch had previously been seen on STS-114 back in July 2005 for Discovery's first return to flight mission following the Columbia Tragedy in 2003.

NASA has 3 primary reasons for doing this. The first is obviously the glitch, if the sensors report that the tank is full when it is really empty, the Shuttle's 3 main engines won't cut off and could result in massive damage to the orbiter which would obviously cause major problems. The second is that they want the solar wings of the International Space Station to be generating optimal power while Atlantis is docked. If they launch now, that won't happen.  The third reason is the New Years Bug.  Apparently the Space Shuttle computers can't properly handle the switch in years from December 31 to January 1. NASA was worried last year about Discovery's STS-116 mission, but they were able to launch and land prior to Christmas so it all worked out. NASA has a fix for it, but they'd rather not use it if they can avoid it.

This bit of bad news comes after NASA successfully launched 3 Space Shuttle missions in 2007, so while it may be a sour note that they can't get the 4th launch in, they at least have something good they can look back on.

Tags: space, news, nasa, astronomy, spaceshuttle