CAPE CANAVERAL -- NASA is fueling space shuttle Endeavour for one last ride into orbit.
The launch team began loading more than a half-million gallons of fuel into Endeavour, moments after royal wedding vows were exchanged across the ocean. It's a pair of historic events, each with its own love story.
Commanding Endeavour on NASA's next-to-last shuttle flight is Navy Capt. Mark Kelly. He's married to Rep. Gabrielle Giffords, who will watch the launch from Kennedy Space Center. She was shot in the head in January and left rehab behind for the liftoff. President Barack Obama also will attend with his family.
Launch time is 3:47 p.m. Forecasters put the odds of good weather at 70 percent.
Endeavour is bound for the International Space Station.