11.   The port is where the shuttle will dock on future missions.

12.   The port will be where the shuttle docks, or attaches itself, to the station on future missions.

13.   The shuttle can only dock with Mir when the steering system keeps it properly aligned.

14.   The shuttle would dock with Mir three days later.

15.   The US shuttle Atlantis successfully docked with the orbiting Russian space station Mir early Wednesday, the second such maneuver in history, NASA said.