Why space shuttle fleet is retiring, what's next
WASHINGTON (AP) — As the space shuttle program winds down, questions are flying about what's happening and why. The launch countdown began Friday for the second-to-last flight. Some answers about the end of the space shuttle:
Q: Why are the shuttles retiring?
A: The shuttles are aging and expensive, their key task is nearly completed and NASA wants to use the money spent on them to do something new. They've been flying since 1981, hauling up pieces of the International Space Station. The panel that investigated the 2003 Columbia accident concluded: "It is in the nation's interest to rep...