With the Land of the Long White Cloud 400 kilometres below them, American Robert Curbeam, and Swede Christer Fuglesang fix a damaged solar array. The accordian-like 34-metre array is supposed to fold up into a box when it is retracted.
Earlier attempts to fix the problem – including a highly unscientific request to an astronaut inside to do some exercise, hoping the movement would jostle the wing into place, failed. The solar wing is part of an interim power system for the space station.
A primary goal of space shuttle Discovery's seven-day visit to the space station was to rewire the lab and hook a new set of solar wings on to the permanent electricity grid.
The new panels rotate with the movement of the sun to maximise the amount of solar energy produced, but in order for the new panels to spin, the old panel had to be retracted.
The Discovery crew delivered a two-tonne, NZ$16 million space station addition, which was installed during the first spacewalk last week.
The space shuttle can be seen launching towards the space station