Contribution to Space Science. He is the U.S. representative to COSPAR and a former member of the Space Studies Board.

JUDITH S. SUNLEY is the acting assistant director for mathematical and physical sciences at the National Science Foundation. She has previously served at the NSF as senior advisor to the director, interim assistant director for education and human resources, executive officer of the Mathematical and Physical Sciences Division, and division director for mathematical sciences.

HARVEY D. TANANBAUM is director of the Smithsonian Astrophysical Observatory’s Chandra X-ray Center (CXC). He was project scientist for the Uhuru X-ray Satellite and served as the scientific program manager for the Einstein Observatory, the first large imaging x-ray telescope. In 1981 Dr. Tananbaum became associate director for high energy astrophysics at the Harvard-Smithsonian Center for Astrophysics, a position he held for 12 years. In 1991, he was appointed director of the CXC. Dr. Tananbaum is a fellow of the AAAS and has served as vice-president of the AAS. He is a member of the Space Studies Board.

MICHAEL TURNER is the Rauner Distinguished Service Professor of Astronomy and Astrophysics at the University of Chicago and a senior scientist at the Fermi National Accelerator Laboratory. He served as NSF assistant director for mathematical and physical sciences from 2003 to 2005. His research focuses on the application of modern ideas in elementary particle theory to cosmology and astrophysics. Dr. Turner chaired the NRC Committee on the Physics of the Universe, which in 2003 published Connecting Quarks with the Cosmos, and he was a member of the most recent decadal survey for astronomy and astrophysics. Dr. Turner has been honored with the Helen B. Warner Prize of the AAS, the Julius Edgar Lilienfeld Prize of the APS, the Halley Lectureship at Oxford University, the Klopsteg Lecture Award of the AAPT, and the Quantrell Award for Excellence in Undergraduate Teaching at the University of Chicago.

C. MEGAN URRY is the director of the Yale Center for Astronomy and Astrophysics. She is the former head of the Science Program Selection Office at the Space Telescope Science Institute. Her research is conducted through theory and observation, with specific interests in multiple wavelengths, including active/interacting galaxies, clusters of galaxies, and supermassive black holes. In addition, she is actively involved in association work, specifically, women in astronomy. She is currently co-chair of the NRC Committee on Astronomy and Astrophysics, and she is a past member of the Space Studies Board.

JOSEPH F. VEVERKA is a professor of astronomy and chair of the Astronomy Department at Cornell University. His research focuses on the use of spacecraft