Dr. Edward Sittler received B.S. degree in Physics at Hofstra University in 1972 where he graduated magna cum laude and his Ph.D. in Physics from the Massachusetts Institute of Technology in 1978. In 1978 he joined the Interplanetary Physics Branch of Goddard's Laboratory for Extraterrestrial Physics initially as an NAS/NRC research associate, after which he joined the permanent staff. He has contributed substantially to the understanding and observation of interplanetary and magnetospheric plasmas, both through instrument development and the interpretation of the data. His association with Voyager 1 and 2 plasma instruments has resulted in many papers detailing the electron environments, bow shocks, magnetotails, and other properties of the outer planets as well as a polytrope law for electrons in the solar wind. Dr. Sittler has received NASA group achievement and special achievement awards. He has been Principal Investigator on both data analysis and instrument development proposals, has served as a member of the Cassini Science Working Group, and is Co-Investigator on the Cassini Plasma Spectrometer Experiment. He is also a Voyager and Wind Co-Investigator. He has developed a semi-empirical model of the solar corona and solar wind and has been leading the development of a new plasma instrument concept for Solar Probe which has provided a nadir viewing capability for solar wind observations as close as 4 solar radii from the Sun ( see Sittler et al., Report for NRA-95-OSS-15 referenced in the AO). Of recent, he is Principal Investigator for the in situ package proposal for Solar Probe which was submitted this past summer July 2000 and is now in the review process. As a Cassini Co-Investigator he is interested in the detection of interstellar pickup ions out to the orbit of Saturn, pickup ions at the icy satellites of Saturn and pickup ions at Titan where the primary emphasis is ion composition.