Steven J. Dick served as the Chief Historian for NASA and Director of the NASA History Division from 2003 to 2009. He obtained his B.S. in astrophysics (1971) and M.A. and Ph.D. (1977) in history and philosophy of science from Indiana University. He worked as an astronomer and historian of science at the U.S. Naval Observatory in Washington, DC, for 24 years, including 3 years on a mountaintop in New Zealand, before coming to NASA Headquarters in 2003. Among his books are Plurality of Worlds: The Origins of the Extraterrestrial Life Debate from Democritus to Kant (Cambridge, U.K.: Cambridge Un...