51.   The shuttle astronauts must conduct three spacewalks to hook up the solar wings and install other equipment before all the hatches can be opened.

52.   The space station will be considerably wider once the new electricity-producing solar wings are installed and unfurled.

53.   The power-hungry lab module will rely heavily on the new solar wings.

54.   The space agency said that it is possible no repairs or extra work will be needed and that the solar wing has an acceptable amount of tension.

55.   The space station will be considerably wider once the new electricity-producing solar wings are installed and unfurled, one by one.

56.   The shuttle astronauts will conduct three spacewalks to hook up the solar wings and attach other equipment to the space station.

57.   The shuttle should catch up with the station on Saturday, and the electricity-producing solar wings installed on Sunday with the help of two spacewalkers.

58.   The solar wings will eventually provide more power to the growing station.

59.   The visit comes one day after shuttle astronauts Joe Tanner and Carlos Noriega tightened a new solar wing on the space station.

60.   The truss holds four motion-control gyroscopes and two antennas, and will serve as the base for solar wings to be installed by the next shuttle crew.