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Bhala okuqhubekayo kwalesi sigabaULuu wathuthela eUnited States njengombaleki ngo1975, lapho uhulumeni waseNingizimu Vietnam ewa
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. 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-bachelor's degree ku-physics ngo-1984. Ukusebenza e-Jet Propulsion Laboratory eNASA ngemva kokuphothula ekolishi kwamkhuthaza ukuba afunde isayensi yezinkanyezi.