Science and Medicine

  • Astronaut:  Franklin Chang-Dìaz, 1986. He flew on a total of seven space-shuttle missions. 
    Ellen Ochoa
    The first female Hispanic astronaut was Ellen Ochoa, whose first of four shuttle missions was in 1991.
  • Nobel Prize in Physics:  Luiz Walter Alvarez, 1968, for discoveries about subatomic particles. Later, he and his son proposed the now-accepted theory that the mass dinosaur extinction was caused by a meteor impact.
  • Nobel Prize in Physiology or Medicine:  Severo Ochoa, 1959, for the synthesis of ribonucleic acid (RNA).