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Guest: Robert Walker. Topics: Humans to Mars and other destinations in the solar system. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, 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. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See We welcomed Robert Walker to the program for a 1 hour 28 minute discussion about his analysis, conclusions, and thoughts regarding humans putting colonies on Mars and elsewhere in the solar system. You can read his articles at Robert has a YouTube channel at I urge listeners to read his articles as they are thought provoking. Though you might not agree with his conclusions, keep an open mind, his articles are very informative and what he has to say should be part of our human spaceflight to Mars discussion. In other words, don't dismiss or blow off what Robert and others are saying about the issues he brought to our attention today. We started the discussion with his August 14th op-ed, "Ten Reasons Not To Live On Mars - Great Place to Explore." Rather than going through each of the ten items, for purposes of this summary and our discussion, we will talk about planetary protection and making sure humans do not contaminate any part of Mars for scientific exploration. Robert referenced the UN as well as NASA and other nation's Planetary Protection Policy against human contamination on Mars and the provisions in the Outer Space Treaty that impose this obligation on all signing countries. Planetary Protection has been discussed before on several Space Show programs but Robert talked about it in the context of why humans to Mars missions will not be allowed and should not be undertaken. He is much more supportive of orbiting missions such as Inspiration Mars or even going to Phobos and Deimos. Most of our first segment is about this subject. We also talked about sample return missions using the ISS or the Moon, exoplanets, lunar settlement, asteroid resources, and space exploration in general. In the second segment, I opened asking him about his short article on the true color of a specifically discovered exoplanet which was cobalt blue as a result of a continuous rain of liquid glass. Robert got several listener emails about planetary protection, Elon Musk and his plans to settle Mars, ways to avoid contamination, and more. He even got a question or two asking why in the literature ETs that have come to other in the stories (maybe), etc. don't seem to have a regard for avoiding contaminating Earth. This was a fun discussion. Another listener asked him a question about his musical and math background and using music to communicate with ET in sci fi movies, wondering if there was any science in fact to the idea of musical communication. Another fun discussion. Jody asked about going to a dry part of Mars with humans to avoid contamination. Don't miss Robert's reply to this scenario. Robert also spoke about teleportation, saying it was key to space exploration. Please post your comments/questions on The Space Show blog. You can email Robert Walker at His website is



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04 Oct 2013 Robert Walker
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