After I got my Ph.D., I went to NASA Goddard Space Flight Center in Greenbelt, MD and worked there for 2 years in the atmospheric experiment branch.

• While at Goddard, my research focused on building mass spectrometers that would be used to explore other objects in the solar system.
• My work at Goddard included working on Cassini's INMS  (Ion Neutral Mass Spectrometer) developing, testing and calibrating that instrument in preparation for its mission to Saturn and Titan.
• Some of the other mass spectrometers the group has developed or is developing include:
• Huygen's Probe GCMS:  a gas chromatograph mass spectrometer that is now enroute to Saturn on board the Cassini spacecraft.  The probe will decent through the atmosphere of Titan.  The GCMS will measure the chemical composition of that atmosphere.
• Gallileo Probe Mass Spectrometer:  a mass spectrometer which plunged into the atmosphere of Jupiter in 1995.
• Pioneer Venus Orbiting Neutral Mass Spectrometer:  a mass spectrometer which further our understanding of the composition of Venus's atmosphere.
• Planet B Neutral Mass Spectrometer:  a mass spectrometer carried on a Japaneese mission to Mars.  It will measure vertical and horizonal density variations in the neutral constituents in the upper atmosphere of Mars.
• Contour:  a mass spectrometer that explore 3 comets on a tour in of the solar system.

Aeronomy Satellites:  Earth satellites developed in the 1960's that furthered our understanding of the Earth's atmosphere