<prompt> Bhala okuqhubekayo kwalesi sigaba - ULuu wathuthela e-United States njengombaleki ngo-1975, lapho uhulumeni waseNingizimu Vietnam ewa  <response>: . futhi. Yena nomkhaya wakubo bahlala emakamu ababaleki nasemahhotela ngaphambi kokuba bahlale eKentucky, lapho ayenezihlobo khona. Waphothula esikoleni esiphakeme njengomfundi ovelele futhi wabe esethole umfundaze e-Stanford University, wathola iziqu zakhe ze-bachelors degree ku-physics ngo-1984. Ukusebenza e-Jet Propulsion Laboratory e-NASA ngemva kokuphothula ekolishi kwamkhuthaza ukuba afunde isayensi yezinkanyezi. 