21. Cape Canaveral, Fla . _ Space shuttle Discovery to undock from international space station. 22. Volynov tried a second time to undock but only managed slightly to loosen the latches. 23. In a hot dock or undock , the computer remains running when docked / undocked. 24. After " Serenity " undocks , the cruiser is seen destroying the derelict. 25. She abruptly undocks from Pell and deserts. 26. The Atlantis crew plans to undock from Mir on Friday, leaving behind astronaut David Wolf. 27. Discovery will undock from the station Friday and the crew will return to Earth on Sunday. 28. Atlantis is due to undock from the space station Sunday and return to Earth early Tuesday. 29. Atlantis is to undock from Mir on Saturday and return to the Kennedy Space Center next Monday. 30. Dec . 13 : 2 : 30 p . m ., Endeavour undocks from space station. 