In 2005, Ehrenfreund came to the United States to work at the Jet Propulsion Laboratory in Pasadena, California and was the project scientist of NASA's O/OREOS satellite.
In 2005, Pascale Ehrenfreund came to the United States to work at the Jet Propulsion Laboratory in Pasadena, California as distinguished Visiting Scientist. From 2008-2012 she was the project scientist of NASA's O/OREOS satellite.