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Dr. Dorit Donoviel, Dr. Eugene de Juan, Jr., Sunday, 11-23-14 November 24, 2014

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Dr. Dorit Donoviel, Dr. Eugene de Juan, Jr., Sunday, 11-23-14

http://archived.thespaceshow.com/shows/2361-BWB-2014-11-23.mp3

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Guests:  Dr. Dorit Donoviel, Dr. Eugene, de Juan, Jr.  Topics:  Microgravity effects on optic nerve, NSRBI Vision for Mars Challenge, vision issues for long duration spaceflight.  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See http://www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed our guests Dr. Dorit Donoviel & Dr. Eugene de Juan, Jr. to discuss the National Space Biomedical Research Institute (NSBRI) “Vision for Mars Challenge: A Unique Opportunity for Ophthalmology Companies.”  Read about this project at http://www.nsbri.org/newsflash/indivArticle.asp?id=454&articleID=212.  For additional information on the grants, visit http://www.smartcap.org.  I would also like to thank Kacey White for her hard work with both guests and TSS in making this program possible.  During the first segment of our 97 minute discussion, Dr. Donoviel started us off with background information for the Vision for Mars Challenge, then Dr. de Juan discussed the nature of the eye problems and the effects of low gravity on the optic nerve.  As you will hear from our guests, the Vision for Mars Challenge will award to small companies a grant of $100,000 to “to help identify and advance medical technologies for ocular health in space through collaboration and funding support.”  After this introductory part of our discussion, our guests went into detail about the medical issues relating to optic nerve changes, pressures, fluid balance and more and what this does to vision.  Our guests were asked how these vision issues might impact a crew on Mars or on the way to Mars but unfortunately not much information is known at this time. Also, we do not know the needed level of gravity to offset the optic nerve, fluid and pressure changes.  Our guests mentioned the upcoming year long crew visit to the ISS and that eye issues will be monitored so that accurate data on vision problems can be collected.  Dr. de Juan did go into many of the medical issues contributing to the vision problem including intraocular pressure and fluid balances.  In addition, we spoke about possible countermeasures.  Both artificial gravity with a short arm centrifuge and mechanical intervention via a certain type of pressure garment were discussed.  Medical intervention was also discussed, then BJohn suggested spinning the spaceship would be more cost effective that other types of countermeasures.  Our guests disagreed, saying medical countermeasures would be designed for patients on Earth as well as astronauts so the market size of potential beneficiaries worldwide would be huge as compared to just a handful of astronauts on a spinning spaceship.  Engineering problems were also cited as a severe cost driver in terms of creating artificial gravity for the crew.  Marshall called to ask about Lasik surgery.  Our guests were then asked about gender & other differences.  Don’t miss these discussions.

In the second segment, Dr. Doug was our first caller.  Doug had multiple questions as usual but first he wanted to know if astronauts could be selected for the longer space missions who had a lengthy stay on the ISS and did not show optic nerve changes or adverse effects.  Our guest thought this would be impractical given around 70% of all astronauts show some vision impact from being in space.  Prisms were talked about as part of mitigation in the form glasses with a variable prescription.  We talked about focus issues in space and on a submarine given my comments about wearing prisms glasses.  Doug’s additional questions dealt with doing a lumbar puncture in space as well as GCRs.  Doug and other listeners via email asked our guests if the vision problems were a show stopper for long duration spaceflight missions.  Don’t miss what Dorit & Gene had to say about this.  Near the end of the program, we talked about the impact of space medicine research on Earth medical problems.  The resulting discussion was most interesting, especially given the examples cited by Dorit via ultrasound in space.  The subject of aerospace medicine medical school programs came up and here Dorit explained the innovative program at Baylor’s Center for Space Medicine.

Please post your comments/questions on TSS blog.  You can contact our guests through me.

Dr. Erik Seedhouse, Monday, 2-10-14 March 11, 2014

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Dr. Erik Seedhouse, Monday, 2-10-14

http://archived.thespaceshow.com/shows/2204-BWB-2014-03-10.mp3

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Guest:  Dr. Erik Seedhouse.  Topics: Suborbital spaceflight & Erik’s new book, “Suborbital: Industry at the Edge of Space.”  Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, https://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. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See www.onegiantleapfoundation.org/amazon.htm.  For those listening to archives using live365.com and rating the programs, please email me as to why you assign a specific rating to the show. This will help me bring better programming to the audience.

We welcomed Dr. Erik Seedhouse back to the show for this 1 hour 28 minute discussion regarding suborbital space and Erik’s new book, “Suborbital: Industry at the Edge of Space.”  In the first segment, Erik started out by telling why he wrote the book and he gave us updates regarding the prominent suborbital space companies.  We talked about payload flights, science flights, academic flights and space tourism flights.  Dr. Seedhouse spoke to the need to lower the cost for the flights and the need to prepare for painful accidents.  Listeners asked him to describe the flight profile for SpaceShip2 and the training many of the passengers had taken at the NASTAR Center.  Erik then spoke about competing centers, the American Astronautic Institute in Florida and Waypoint 2 Space which is adjacent to NASA JSC.  Questions came up about Astronauts4Hire and & the need to self market to get a flight.  Erik talked about floating free during the microgravity part of the flight on Virgin, addressing the issue of getting back to your seat on time before reentry.   Near the end of the segment, a listener asked why it was taking so long for suborbital flight we it was done decades ago and the information is in the public domain.  Ham the Chimp got mentioned in this section.  As the segment was closing, the new topic of space motion sickness came up.

In the second segment, a listener wanted to know if it mattered to the passenger re medical issues if vertical launch was used or horizontal launch was used.  Erik said the g force was the biggest medical problem with suborbital space.  He also talked about long arm centrifuge training, then he went over the Anti-G Straining Maneuver to deal with g force issues.  Space suits came, space tourist physical conditioning was discussion topic as was space radiation which Erik said was not a problem for suborbital flights.

Please post your comments on The Space Show blog above. Erik can be contacted at DrEricSeedhouse@hotmail.com.  Erik’s website is www.suborbitaltraining.com.