Jan. 10 launch won't delay next mission.

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NASA could still pick up its original 2008 schedule after launching Atlantis on Jan. 10. A five-week turnaround between the launches of Atlantis and Endeavour would make that possible.

"If we launched on the 10th (of January), it does not affect the ability to launch on Feb. 14," said NASA spokesman Kyle Herring.

A Valentine's Day launch of Endeavour will return NASA to the schedule the agency proposed to complete the space station before the shuttle program ends in 2010.

However, if Atlantis' launch is delayed until Jan. 13 or 14, that would force a day for day slip in Endeavour's Valentine's Day mission. Laboratory modules will be delivered on both missions to the International Space Station.

"All of that still fits," said Herring.

TIMELINE:

Dec. 18 - Tanking test of Atlantis at launch pad

Dec. 19 - Mating Endeavour's external tank with solid rocket boosters in the VAB

Jan. 9 - Rollover of Endeavour to the VAB

Jan. 10 - Atlantis scheduled to launch from Pad 39A at 2:26 a.m. EST

Jan. 16 - Endeavour rolls out to the launch pad

Feb. 14 - Endeavour launches

NASA announced a Jan. 10 launch to allow employees time off to enjoy the holiday season. On Tuesday at Kennedy Space Center, Atlantis will be fueled to troubleshoot low-fuel sensors that caused delays of Dec. 6 and 9 launch attempts.