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The John Batchelor Show Hotel Mars, Wednesday, 1-9-13 January 10, 2013

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The John Batchelor Show Hotel Mars, Wednesday, 1-9-13

John Batchelor, Dr. Ed Lu, Dr. David Livingston

http://archived.thespaceshow.com/shows/1927-BWB-2013-01-09.mp3

Guests:  John Batchelor, Dr. Edward Lu,  Dr. David Livingston:  Topics:  B612 Foundation, asteroid impact & Earth.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. 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.  During our 11 minute plus discussion, Dr. Lu, John, and I talked about the Asteroid 2012 DA14 and its pass near Earth on Feb. 15 of this year, the discovery that Apophis is about 20% larger than originally thought and the significance of that discovery, plus our ability to deflect a NEO headed for Earth.  We also talked about the B612 Foundation, its mission to protect the Earth from threatening asteroids before they find us, their Sentinel Project, and Dr. Lu directed our attention to their video on their website home page which shows NEOs in our solar system and around Earth.  You can see the video at http://b612foundation.org.

     Please post any comments/questions you might have on The Space Show blog.  You can contact Mr. Batchelor or Dr. Lu through me at drspace@thespaceshow.com.

Dr. Jeff Bell, Tuesday, 7-10-12 July 11, 2012

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Dr. Jeff Bell, Tuesday, 7-10-12

http://archived.thespaceshow.com/shows/1811-BWB-2012-07-10.mp3

Guest:  Dr. Jeff Bell.  Topics:  Vintage Jeff Bell.  We discussed a wide range of space history and current space projects from Dr. Bell’s perspective.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. 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 welcomed the return of Dr. Jeff Bell to The Space Show.  This 2.5 hour marathon discussion with Dr. Bell was classic Jeff Bell with space history, his analysis of current projects, new space ideas, NASA, Congress and well, you name it.  Dr. Bell had lots to say about many topics and for those of you familiar with Dr. Bell & his analysis, I promise you, you will not be disappointed with this discussion.  Those of you new to Dr. Bell, hold onto your seat!  Jeff started off with the cold war space history, X-33, and DCX. In doing so, he offered up his critique of the classic space book by G. Harry Stine, “Halfway To Anywhere: Achieving America’s Destiny In Space.”  As to be expected, Dr. Bell provided a very hard hitting, factual, and critical analysis of these topics & the book.  We also talked about the new company in Florida, Project Speed, and air breathing engines for space vehicles.  Dr. Bell spent some time on this analysis including scramjets, ramjets and the National Aerospace Plane.  When asked to confirm that little progress was being made from his perspective re space vehicles & even aviation, he cited the current military games going on in Hawaii, referencing the planes being used by the Air Force, Navy, & other military services, all to illustrate by example the points he was making.  He put out the fire on nuclear propulsion based on economics & costs, & then in discussing human spaceflight (HSF), like so many others, he said the rational for it was difficult justify to Congress & the taxpayers.  A listener asked Jeff he was biased in his analysis.  Jeff said he was unbiased in his examination of the facts. This issue surfaced again later during our program.  We then talked about a Washington Post article saying that our science field was over populated by excessive PhDs that cannot find work in their discipline (www.washingtonpost.com/national/health-science/us-pushes-for-more-scientists-but-the-jobs-arent-there/2012/07/07/gJQAZJpQUW_story.html?hpid=z1).  This prompted listeners to reply and John made some excellent points about science PhDs that Jeff missed.

In our second segment, we started off with space visions, including the one from this program, followed by a discussion of the “Sputnik Panic” following theUSSR launch of Sputnik.  We both had much to say about this event & its aftermath. Returning to the HSF rational, Jeff said there were two main problems with it. First, the very high cost.  Second, the is no place to go that does not require massive technology & support to sustain life.  He spent some time elaborating on this & responding to listener comments.  Next up, Planetary Resources, asteroid mining, space telescopes, & Earth imaging.  Dr. Bell took no prisoners in sharing his analysis with us.  He did talk about several serious projects including the B612 project & Pan Starrs.  As the program was ending, Dr. Bell had many positive things to say about the recently completed SpaceX Dragon & Falcon 9 flight, & the pork as he called it, SLS.  Dr. Bell was very strong & clear in his support for SpaceX and their accomplishments.

Please post your comments/questions on The Space Show blog URL above.

Rusty Schweickart, Tuesday, 5-1-12 May 2, 2012

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Rusty Schweickart, Tuesday, 5-1-12

http://archived.thespaceshow.com/shows/1766-BWB-2012-05-01.mp3

Guest:  Rusty Schweickart.   Topics:  Planetary Defense, NEO deflection.  You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. 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 welcomed back Rusty Schweickart to update us on the latest with planetary defense and NEO risk assessment.  Rusty started our discussion with an examining of the asteroid 2011 AG5 which if it goes through the keyhole in 2023, would be likely to hit Earth in 2040.  During much of this first segment, our guest explained asteroid orbital issues, the keyhole and why it is so important to understand it, Earth’s gravity impact on NEOs, and the different deflection techniques.  He talked about the need for a dual mission which would include an observer satellite plus the kinetic impact deflector.  The observer satellite would be needed to confirm the hit and if the deflection was sufficient to miss the keyhole.  He estimated the cost for such a mission from $500 million to a billion or more!  We also learned that the keyhole for AG5 is about 300 KM wide and that is a much easier deflection than trying to do it once AG5 goes through the keyhole. Then we would be looking at a deflection roughly equal to the Earth’s diameter of 20,000 km which is a much harder deflection to accomplish requiring significantly more energy and costs.  Other issues talked about in this segment included the state of our existing technology to accomplish a deflection, the risks associated with AG5, the issue of who pays for the cost of such a mission, the role of a heavy lift launcher in deflection, and asteroid finding space telescopes.

In our second segment, we talked about different scenarios for deflection and the cost of deflection compared to the cost of an evacuation of people from the impact zone.  Rusty talked about knowing the impact zone and why we can evaluate this much further in advance of impact than when working with space debris.  A listener asked about using a nuclear bomb in space for mitigation. Rusty took us through the nuclear analysis and when as a last resort, a nuke might be needed.  In this analysis, he again went over the kinetic impact and then talked about the gravity tractor concept which he said was slow but very precise.  In his analysis, he used an interesting analogy to baseball, pitching the fastball, & the point at which the batter must act given the speed of the ball.  Don’t miss it.  We talked more on telescopes and he mentioned the University of Hawaii ATLAS project (www.fallingstar.com). Another important point discussed in this segment was the fact that NASA has no official responsibility to protect us from a hit.  We talked about the consequences of this policy, changing the policy to officially give NASA this responsibility, and funding it through the budget process.  During our discussion, Rust outlined several steps that listeners could take if interested in this issue.  Rusty offered specific recommendations all of us could do that would be beneficial to planetary defense.

Please post your comments/questions on The Space Show blog.  If you want to send Rusty a note, please do so through me.

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