Dr. Kalpana Chawla was the first Indian-American woman to fly in space. She was selected for a second flight in 2000 and tragically died in the 2003 Columbia disaster. She logged 30 days, 14 hours, and 54 minutes in space.
Dr. Severo Ochoa was born in Spain in 1905 and naturalized to the United States in 1956. Four years later, in 1959, He received the Nobel Prize in Physiology or Medicine for his work with Dr. Marianne Grunberg-Manago in discovering an enzyme that builds RNA and DNA.