Solar Wings

Another day in the orbital construction zone as the new solar panels were unfurled (Washington Post - NASA Unfurls Station's New Solar Wings):

NASA unfurled the international space station's new solar wings for the first time Thursday in what looked like a giant accordion being stretched out in orbit. [...] The crew did not run into any trouble with the folded-up panels sticking together in the cold, a problem that came up during a mission in 2000. This time, NASA devised a method for unfurling the solar wings that allowed them to be heated up by the sun.