NASA's extra shuttle flight hangs in the balance

Less than two weeks before the space shuttle Discovery is scheduled to launch on its last flight, uncertainty still remains as to exactly when NASA's very final orbiter mission will fly, bringing the storied shuttle era to a close next year. NASA has two scheduled shuttle missions, on Discovery and Endeavour, left to fly before retiring its orbiter fleet in 2011. A third, extra shuttle mission has been approved by Congress and President Obama, but still faces review by congressional appropriators later this year. More

(Source: MSNBC - Oct 25)