The Space Show focuses on timely and important issues influencing the development of outer-space commerce and space tourism, as well as other related subjects of interest to us all.
You can listen anytime you like to any guest that has been on The Space Show or its predecessor, Business Without Boundaries, using Windows Media Player.
1132 (Special Edition)||Listen to the show!|
|Aired on March 31st, 2009|
|Guest: Les Johnson|
|Guest: Les Johnson. Topics: solar sail, space propulsion, interstellar space travel, environmental organizations. Les Johnson was our guest for this program for our discussion of solar sail technology and deployment, interstellar space travel and propulsion ideas, and the space advocacy community relationship with environmental organizations. Our first segment focused on solar sail technology and the efforts so far to have a successful solar sail demonstration flight. Les described the size of the sail needed, the challenges, the material for the sail, and the formulas that support the solar sail theory. We also talked about scientific and commercial uses for solar sail propulsion, its usefulness in space and the limits of its usefulness which appear to be at Jupiter. In explaining the solar sail, we talked about light with momentum and pushing and why we cannot experience it here on Earth but how it’s proven in the vacuum chambers and in space. During the second segment, we spoke about his new book which will be out in early fall, "Paradise Regained: The Re-greening of Planet Earth," which explains why space advocates and environmentalist have so much in common and should be working together. This resulted in a very interesting and diverse conversation with good listener questions and comments. You won't want to miss it! During our final segment, we focused on the out-of-the-box aspects of interstellar propulsion. Among the technologies that may be useful are solar/laser sails, fusion, antimatter, and maybe folding space with worm holes. However, all of these are beyond current engineering, physics, and financial means. This is also a most interesting reality based discussion that you will want to hear. Toward the end of the program, we talked about careers in out-of-the-box physics, what academic subjects or fields to pursue and more. If you want to send a question or comment to Les Johnson, you can do so at http://www.lesjohnsonauthor.com/contact_les or email@example.com . Visit his website at http://www.lesjohnsonauthor.com/ .|
|About our guest...|
Les Johnson is the Deputy Manager for NASA’s Advanced Concepts Office at the Marshall Space Flight Center in Huntsville, Alabama. He is a co-investigator on a Japanese space tether experiment that will fly in the summer of 2009. During his career at NASA, he served as the Manager for the Space Science Programs and Projects Office, the In-Space Propulsion Technology Program, and the Interstellar Propulsion Research Project. He was the Chief Scientist for the ProSEDS space experiment, twice received NASA’s Exceptional Achievement Medal, and has three patents. He is an author of three popular science books, Living Off the Land in Space and Solar Sailing: A Novel Approach to Interplanetary Travel, and the soon-to-be published, Paradise Regained: The Re-greening of Planet Earth, which will explain why space advocates and environmentalists should work together. Les was the technical consultant for the movie, “Lost in Space.” Les has numerous peer reviewed publications and has been published in Analog. He is a frequent contributor to the Journal of the British Interplanetary Society and a member of the National Space Society, The World Future Society, and MENSA. National Public Radio, CNN, The New York Times, and Fox News have interviewed him. He’s appeared in several documentaries shown on The Discovery Channel and The Science Channel. He earned his bachelor’s degree in chemistry and physics from Transylvania University in Lexington, Kentucky and his Master’s degree in physics from Vanderbilt University in Nashville, Tennessee.
[ Return to the main page ]
NOTICE: The views and comments expressed on The Space Show by its guests, callers, and listeners belong to the maker. The Space Show and its host serve only as a platform and are not responsible for other's comments or view. All topics discussed on The Space Show are primarily for educational purposes.
Streaming audio requires Microsoft Windows Media Player or compatible audio player
For technical support please contact the webmaster: Webmaster@TheSpaceShow.com
Website and audio content are for personal use only and protected by U.S. copyright law.
For more information e-mail Dr. David Livingston: DrSpace@TheSpaceShow.com
© Copyright 2001 - 2013 David Livingston. All Rights Reserved.