NASA: Missing clip no threat to re-entry

NASA: Missing clip no threat to re-entry

With lab delivered, shuttle to leave space station

With lab delivered, shuttle to leave space station

Last minute work for shuttle before hatches close

Last minute work for shuttle before hatches close

Astronauts wrap up space station work

Astronauts wrap up space station work

Russia Launches Cargo Ship With Supplies For Space Station

Russia Launches Cargo Ship With Supplies For Space Station