Discovery docks at space station on final voyage

CAPE CANAVERAL, Florida - Space shuttle Discovery arrived at the International Space Station on Saturday, making its final visit before being parked at a museum.

"What took you guys so long?" asked Scott Kelly, the space station's commander.

Discovery should have come and gone last November, but it was grounded by fuel tank cracks. It blasted off on Thursday with just two seconds to spare after being held up by a balky ground computer.