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Bonnard J. Teegarden
Bonnard John Teegarden (born August 23, 1940) is an American astrophysicist formerly with NASA's Goddard Space Flight Center, now retired. He spent most of his career studying cosmic gamma ray A gamma ray, also known as gamma radiation (symbol γ or \gamma), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves, typically ...s and is best known to the public for leading the team that discovered Teegarden's star in 2003. Education Teegarden grew up in Fair Haven, New Jersey and graduated from Rumson-Fair Haven Regional High School in Rumson, New Jersey, Rumson in 1958. He earned a Bachelor of Science from the Massachusetts Institute of Technology in 1962 and a Doctor of Philosophy from the University of Maryland, College Park, University of Maryland in 1967. His thesis was "A Study of Low Energy Galactic Cosmic Rays" and his advisor was Frank B. McDonald. Career ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Americans
Americans are the Citizenship of the United States, citizens and United States nationality law, nationals of the United States, United States of America.; ; Although direct citizens and nationals make up the majority of Americans, many Multiple citizenship, dual citizens, expatriates, and green card, permanent residents could also legally claim American nationality. The United States is home to race and ethnicity in the United States, people of many racial and ethnic origins; consequently, culture of the United States, American culture and Law of the United States, law do not equate nationality with Race (human categorization), race or Ethnic group, ethnicity, but with citizenship and an Oath of Allegiance (United States), oath of permanent allegiance. Overview The majority of Americans or their ancestors Immigration to the United States, immigrated to the United States or are descended from people who were Trans Atlantic Slave Trade, brought as Slavery in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
