Delayed a day by rainy weather, the space shuttle Discovery is back, safe and sound at Kennedy Space Center in Florida after a 15 day mission.

Meanwhile, the Atlantis is getting ready to be moved overnight to the Vehicle Assembly Building to get her ready for her final mission. That mission is slated to launch May 14th.

The next time Discovery takes to the skies it will be in September and will mark not only her final mission, but the last planned mission for the entire shuttle fleet.