Three members of Expedition 38 crew have touched down safely in Kazakhstan, after experiencing five and a half months of microgravity.
Saturday's spacewalk -- part of a potential trio to replace a failing plump -- went well.
Two astronauts removed an old space station pump Saturday, well ahead of schedule. That task had been planned for the next spacewalk on Monday.
The space agency received more than 6,300 applications between Nov. 15 and Jan. 27 during the search for new astronauts – making it second-highest turnout ever and double the normal response, NASA officials said.