Space shuttle Discovery readied for final mission

NASA attached the space shuttle Discovery to its fuel tank and twin rocket boosters over the weekend to gear up for the spacecraft's final voyage to orbit later this year. Discovery was firmly attached its 15-story external fuel tank and solid rocket boosters Saturday after a slight delay due to a loose attachment nut that slipped into the spacecraft's aft compartment on Friday. The 100-ton shuttle was hanging vertically near its external tank inside NASA's cavernous Vehicle Assembly Building at the Kennedy Space Center in Florida when the nut slipped loose. More

(Source: MSNBC - Sep 15)