Paolo Nespoli 'tweeted' good luck to Mission X participants

Paolo Nespoli, known to his Twitter followers as @astro_paolo, 'tweeted' a good luck message to all the Mission X participants from the International Space Station, 14 January 2011.

Some 4000 pupils areound the world are embarking on Mission X, a unique mission to train like an astronaut. Mission X is an international pilot project led by ESA and NASA, involving 9 countries.