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Dr. John S. Lewis, Wednesday, 2-20-13 February 24, 2013

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Dr. John S. Lewis, Wednesday, 2-20-13

http://archived.thespaceshow.com/shows/1955-BWB-2013-02-20.mp3

Guest:  Dr. John S. Lewis.  Topics:  The Chelyabinsk meteorite, Asteroid 2012 DA14, the Chinese program and 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. 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.

We welcomed back Dr. John Lewis to discuss recent meteorite impacts, NEO flybys, asteroid minding, the Chinese space program and more.  In the first segment of our 90 minute program, Dr. Lewis talked briefly about accepting the position of Chief Scientist for the new company, Deep Space Industries.  He also spoke in general terms about this emerging industry.  Our initial caller asked Dr. Lewis about his writing science fiction so you will hear about that as well.  We then turned our attention to the Chelyabinsk meteorite and the flyby of Asteroid 2012 DA14.  Visit www.johnslewis.com for detailed information on these events plus much more.  The Russian meteorite  was estimated to be about 10,000 tons or the mass of a U.S. Navy cruiser.  Dr. Lewis explained why it was not detected before hitting the atmosphere.  We then speculated on what would have happened had it come in over a large city such as London.  Dr. Lurio called in to talk about his joining Deep Space Industries as the Chief Scientist.  Charles also wanted to know about the previous announcements that he would be an advisor for Planetary Resources.  Dr. Lewis explained this and corrected misunderstandings regarding the issues addressed by the question.  Jack sent in an email seeking mining comparisons here on Earth to those in space given his being in mining country in Virginia.  Another listener asked about the potential dollar value of the Chelyabinsk meteorite.  In his response, John suggested the best value for using asteroids in space re ISRU.  Another question came up about hollowing out an asteroid and using it for HSF travel.  Dr. Lewis talked about this idea dating back to 1918 and Robert Goddard.  Kelly asked about moving an asteroid to a low lunar orbit and if a human mission to a NEO was a good stepping stone for a human flight to Mars. John had much to say to us on both of Kelly’s questions.

In the second segment, we opened with my asking John about the Chinese space program and their high launch rate.  Don’t miss John’s comprehensive answer about both the Chinese military space program and their quasi-civil space program.  It was most informative.  Next, John told us about an incident when he was 13 years old living in a Boston suburb with what was probably a meteorite coming in overhead that disturbed his entire neighborhood.  It’s a fascinating story that illustrates events like we just saw in Russia are fairly common throughout history.  Don’t miss this story!  Another topic in this segment was the low quality science and news reporting in this country. Dr. Lewis expressed concern about this with some explanations to help us understand the reality of today’s news reporting services.  Listener Bruce sent in an email asking about nuclear explosions to deflect a larger asteroid and doing such tests in space.  Again, Dr. Lewis had much to say and offer us on this issue.  This led to a discussion on detecting Earth-bound NEOs, what sizes we can and cannot detect today, the amount of warning time we might have and more.  Near the end of our discussion, Emma in NYC sent in a note asking John what the Chelyabinsk meteorite  would have looked like had it come in over a Martian settlement.  John’s response was fascinating and very descriptive.  Pooley sent in an email with the classic NASA NEO website, http://neo.jpl.nasa.gov/ca.

Please post your comments/questions on The Space Show blog.  You can reach Dr. Lewis through me at drspace@thespaceshow.com or his own blog per above.

The John Batchelor Show Hotel Mars, Wednesday, 2-6-13 February 6, 2013

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The John Batchelor Show Hotel Mars, Wednesday, 2-6-13

http://archived.thespaceshow.com/shows/1945-BWB-2013-02-06.mp3

Guests:  John Batchelor, Dr. Don Yeomans,  Dr. David Livingston:  Topics: Near Earth Objects and Asteroid 2012 DA14.  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 with Dr. Don Yeomans of the NASA Near Earth Object Program Office at JPL, we talked about the 17,500 mile approach to Earth of Asteroid 2012 DA14.  This asteroid will be this close to Earth on Feb. 15, 2013.  We discussed the asteroid’s orbit, possible collision with our satellites, and how we might deflect or mitigate the damage of an object this size that might be headed for Earth impact.  This particular asteroid is probably made of rock and has a 45 meter diameter.  Dr. Yeomans also talked about the search for potential NEOs that could impact the Earth, breaking the search down by the size of the space object.  Our guest suggested the best viewing spots for trying to see Asteroid 2012 DA14 but unfortunately the sites are not in the U.S.  To really see it, one would need binoculars or a telescope.

      Please post any comments/questions you might have on The Space Show blog.  You can contact any of  us through drspace@thespaceshow.com.

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.

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