Can you work for NASA if you are not from USA?
NASA
The agency's administration is located at NASA Headquarters in Washington, DC and provides overall guidance and direction. Except under exceptional circumstances, NASA civil service employees are required to be citizens of the United States.
List of space travelers by nationality
The following persons flew into the upper atmosphere between , which counts as space flight by United States guidelines:Some of these astronauts participated in national space programme activity unrelated to their home country's contemporary or subsequent membership of the European Space Agency.Additionally, Michael Foale was born in England to a British father and American mother and a dual citizen of the United Kingdom and the United States, and was raised and educated in England; however, he is a member of NASA's Astronaut Corps and flew as an American. Gregory H. Johnson has foreign (US) citizenship, having been born in the UK to American parents, while Piers Sellers, Nicholas Patrick, Richard Garriott and Mark Shuttleworth have dual nationalities.