Manchester United players Evans and Giggs stand with a life-size training model of a space shuttle behind them as they tour NASA’s Johnson Space Center in Houston

Manchester United players Jonathan Evans (L) and Ryan Giggs stand with a life-size training model of a space shuttle behind them as they tour NASA’s Johnson Space Center in Houston July 27, 2010. REUTERS/Richard Carson (UNITED STATES – Tags: SPORT SOCCER SCI TECH)