Författare: James M. Moran

A.Richard Thompson, Ph D, has been associated with the National Radio Astronomy Observatory in numerous capacities for more than 27 years. James M. Moran, Ph D, is a senior scientist at the Smith-sonian Astrophysical Observatory and Professor of Astronomy at Harvard University. George W. Swenson, Jr., Ph D, is Professor Emeritus of Electrical Engineering and of Astronomy at the University of Illinois at Urbana Champaign.