Tracy Caldwell Dyson
| Tracy Caldwell Dyson | |
|---|---|
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| NASA Astronaut | |
| Nationality | American |
| Status | Active |
| Born |
August 14, 1969 Arcadia, California, U.S |
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Other occupation
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Chemist |
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California State University, Fullerton, B.S. Chemistry 1993 University of California, Davis, Ph.D. Chemistry 1997 |
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Time in space
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188 days, 19 hours, 14 minutes |
| Selection | 1998 NASA Group |
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Total EVAs
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3 |
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Total EVA time
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22 hours, 49 minutes |
| Missions | STS-118, Soyuz TMA-18 (Expedition 23/24) |
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Mission insignia
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Tracy Caldwell Dyson (born Tracy Ellen Caldwell; August 14, 1969) is an American chemist and NASA astronaut. Caldwell Dyson was a Mission Specialist on Space Shuttle Endeavour flight STS-118 in August 2007. She was part of the Expedition 24 crew on the International Space Station between April 4, 2010 and September 25, 2010. She has completed three spacewalks, logging more than 22 hrs of EVA including work to replace a malfunctioning coolant pump.
As an undergraduate researcher at the California State University, Fullerton (CSUF), Caldwell Dyson designed, constructed and implemented electronics and hardware associated with a laser-ionization, time-of-flight mass spectrometer for studying atmospherically relevant gas-phase chemistry.
Also at CSUF, she worked for the Research and Instructional Safety Office as a lab assistant performing environmental monitoring of laboratories using hazardous chemicals and radioactive materials, as well as calibrating survey instruments and helping to process chemical and radioactive waste. During that time (and for many years prior) she also worked as an electrician/inside wireman for her father’s electrical contracting company doing commercial and light industrial type construction.
At the University of California, Davis, Caldwell Dyson taught general chemistry laboratory and began her graduate research. Her dissertation work focused on investigating molecular-level surface reactivity and kinetics of metal surfaces using electron spectroscopy, laser desorption, and Fourier transform mass spectrometry techniques. She also designed and built peripheral components for a variable temperature, ultra-high vacuum scanning tunneling microscopy system.
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