After military service, Code received a master's degree and doctorate in astronomy and astrophysics from the University of Chicago (without having received a bachelor's degree) advised by Subrahmanyan Chandrasekhar. He spent the majority of his career at the University of Wisconsin, where he was also director of the Washburn Observatory. He had previously taught at the University of Virginia and the California Institute of Technology.
Code was one of the leaders of the OAO-2 project, an orbiting satellite that had light sensors, spectrometers, and various other radiation detectors. Data from OAO-2 demonstrated that young stars were hotter than previously believed, and also showed the existence of ozone in Mars's atmosphere.
- Pearce, Jeremy (March 22, 2009). "Arthur Code, Astronomer and Professor, Dies at 85". The New York Times. Retrieved March 23, 2009.
- Devitt, Terry (March 16, 2009). "Arthur D. Code, pioneering space astronomer, dies". University of Wisconsin-Madison News. Retrieved March 23, 2009.
- Oral History interview transcript with Arthur Code 30 September & 1 October 1982, American Institute of Physics, Niels Bohr Library and Archives
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