Bachelor, Williams College, 1990. Master of Science in Astronautical Engineering, University Washington, 1992. Doctor of Philosophy, University Washington, 1994.
Research assistant Los Alamos (New Mexico) National Laboratory, 1992-1994. Partner, chief engineer Tethers Unlimited, Seattle, 1994-1997, president, Chief Executive Officer, chief engineer, since 1997.
Member American Institute of Aeronautics and Astronautics.