(NECN/NASA TV) - Astronauts on the shuttle Discovery woke today to "City of Blinding Lights" by U2.
The song was chosen by Steve Kopra, who was supposed to lead the final space walk but was grounded after a bicycle accident.
This will be a day of rest for the crew following Wednesday's successful walk in space.
Discovery is scheduled to undock from the International Space Station Sunday for the trip back to earth. This is the final flight for NASA's oldest space shuttle as the program winds down.