Quiet night before launch

All remains clear for an overnight fueling of the shuttle Discovery for a launch to the International Space Station Tuesday morning.

The crew is in bed and launch crews at Kennedy Space Center have moved the Rotating Service Structure clear of the vehicle on the pad.

You can see the shuttle exposed on the launch pad in the live images above. We'll keep the live camera feeds up all night. Our live coverage will go on throughout the night, with the following timeline for major overnight events leading up the launch, which is set for 11:38 a.m. tomorrow weather-permitting.

Just after 1 a.m., the Mission Management Team will meet to give the go-ahead to fuel Discovery's external tank for launch. The launch team will begin pumping a half-million gallons of supercold propellants into the external tank just before 2:30 a.m. We'll have live coverage here throughout the evening and overnight.

There are no launch-stopping technical issues being worked on at this hour. However, weather remains a major concern.

Clouds and showers are expected and forecasters say the chance of acceptable conditions is just 40 percent on Tuesday. The forecast improves to 60 percent "go" conditions if the launch is scrubbed and the team tries again on Wednesday morning.

Stay tuned here for live updates and video through liftoff. Meanwhile, you can read up on the mission with some of these online extras:

Todd Halvorson's mission preview.

56 things you should know about the astronaut crew.

Chat in our space forum about the launch decision and other issues.

Graphic showing the space station construction plan.

Sign up for text message alerts on launch day.

Crew photo gallery and a musical slide show.

Warning map for mariners.