Dr. MacDowall is an Astrophysicist in the Planetary Magnetospheres Branch, Laboratory for Extraterrestrial Physics, at NASA/Goddard Space Flight Center. His primary research experience is in solar and planetary radio astronomy, solar wind observations, and plasma waves observations and interpretation. He is the Principal Investigator of the Ulysses Unified Radio and Plasma Wave Investigation (URAP) and a Co-Investigator on the WIND/WAVES and STEREO/WAVES (radio and plasma wave) investigations. He has degrees from Swarthmore College (B.A., Physics, 1978; M.A., Astronomy, 1979) and the University of Maryland (M.S. Physics, 1984; Ph.D. Astronomy, 1989). He spent two years (1984-1986) at the Paris Observatory, Meudon, France, as the recipient of a Chateaubriand Fellowship, from the French Ministry of Foreign Affairs. He is an author of more than 50 refereed publications and is a member of the American Geophysical Union and Sigma Xi.