Guests: John Batchelor, Dr. David Brain, Dr. David Livingston. Topics: NASA's MAVEN findings on the Martian atmosphere. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Written Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright. We do not permit the commercial use of any Space Show program or part thereof, nor do we permit Space Show programs to be edited, placed on YouTube, or other private channels & websites. Space Show programs can be quoted in news articles, papers, academic & research work but must be cited or referenced in the proper citation format. Contact Dr. Livingston for questions about our copyright and trademark policies which we do enforce. This program is archived on The Space Show website, podcasting, and blog sites with permission from John Batchelor. Please visit the John Batchelor Show website for more information about this fine program, www.johnbatchelorshow.com. Remember, your Amazon Purchases Can Help Support The Space Show/OGLF (www.onegiantleapfoundation.org/amazon.htm). For those of you listening to archives on live365.com & rating the programs, please email me the reasons for your rating. This will definitely help improve Space Show programming. Thank you. Please note that audio and transition issues are a result of copying the John Batchelor broadcast & are not within my control as they originate in the Batchelor studio. John Batchelor and I welcomed back Dr. David Brain who is part of the NASA MAVEN team to discuss the recent findings regarding the solar wind as causing the loss of the Martian atmosphere over billions of years. Dr. Brain discussed the findings for the Martian upper atmosphere, he explained the solar wind, the channel which most of the atmosphere seemed to use to disappear, plus he talked about the various stages and ages of the geologic history of Mars. We talked about the conditions needed for surface water, the early Martian history and its cooling which would cause it to lose its magnetic field in the first place. John asked several questions comparing the early history of Mars with Earth, especially regarding magnetic fields, the magnetosphere and shielding from the solar wind. I asked Dr. Brain to explain the solar wind so we would all know what the solar wind is and how it fluctuates. This is an information packed 11-12 minutes, don't miss it. Please post your comments/questions on The Space Show blog above. You can email Mr. Batchelor or Dr. Brain through me at drspace@thespaceshow.com.