Guests:  Melvin (Mel) Croft & John Youskauskas; Topics:  The NASA Payload Specialist Program and their new book, "Come Fly With Us: NASA's Payload Specialist Program," plus many related topics. 

Guest:  Dr. John Jurist;  Topics: Human spaceflight space radiation issues, large rocket acoustic signatures, space settlement, human spaceflight to Mars, ethics.  Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website, www.thespaceshow.com.   Comments and questions should be relevant to the specific Space Show program.

Guest: Dr. Wendell Mendell. Topics: His 50 years at NASA, the Moon, lunar base work, congress & more. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://thespaceshow.wordpress.com. Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use.

Nicholas Johnson, Chief Scientist for Orbital Debris at the NASA Johnson Space Center was the guest for this program. Have you ever wondered about orbital debris? Is your understanding and knowledge base about the subject short on real facts? Do you know the real risks with orbital debris for robotics, the manned program, space tourism? These and other questions are answered in detail on this show. Based on listener questions as well as information Nick shared with us, we talked about how the debris is located, tracked, measured, and more.