jump to navigation

Dr. Linda Spilker, Monday, 11-30-15 December 1, 2015

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , ,
add a comment

Dr. Linda Spilker, Monday, 11-30-15

http://archived.thespaceshow.com/shows/2595-BWB-2015-11-30.mp3

Your Amazon Purchases Helps Support TSS/OGLF (see www.onegiantleapfoundation.org/amazon.htm)

If you rate shows on live365.com, email me your rating reasons to help improve the show

Our annual campaign drive is now underway.  This fundraising campaign is critical to The Space Show’s operations for the coming year so please support us.  You can read our campaign letter at:

https://thespaceshow.wordpress.com/2015/11/27/oglf-2015-annual-fund-raising-campaign

Guest:  Dr. Linda Spilker;  Topic: NASA’s CASSINI mission to Saturn and its planned ending.  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. Linda Spilker to the program to discuss the NASA Cassini mission to Saturn, Cassini Saturn discoveries, and more.  Note that our program was 66 minutes in length in one segment.  We started our discussion with Dr. Spilker doing a quick overview of the Cassini mission.  It took seven years to get to Saturn and has been flying around the Saturn system for11 years since July 1, 2004.  Cassini will run out of fuel with a spectacular final mission in September 2017 which we discussed later in the show.  Dr. Spilker talked about the design and budget compromises made with Cassini, the mission plan or the Cassini “tours,” the protests against Cassini due to the NTG aboard the spacecraft, plus the path it took to get to the Saturn system.  I asked Dr. Spilker for the highlights so far regarding Cassini discoveries so don’t miss what she had to say about this given there have been so many great findings and discoveries.  We also talked orbital dynamics for Saturn orbiting the sun (1 orbit=30 Earth years) and Cassini orbiting Saturn or touring the rings or the moons.  Highlights included the polar geysers discovered on the moon Enceladus, the mysterious red streaks on a smaller moon, Tethys, plus countless discoveries about Saturn’s ring system.  Linda had much to say about Titan and the Huygens Probe and its camera limitation due to a question by Dr. Doug.  We also talked about finding organics in the Saturn system, the possibility of life, &  comparisons to Mars and Europa.  Ben asked if the huge gravity field of somewhat nearby Jupiter had an impact on Saturn.  Sherry wanted to know if NASA, JPL, or members of the Cassini team ever heard from the NTG protestors with apologies given the great success of Cassini.  I bet you can guess what Dr. Spilker said in reply to Ben.  Our guest was also asked if a future mission could be done using solar rather than an NTG.  While Linda was not certain of it, she did say that great advances have been made in solar panel effectiveness, storage, etc. NASA is looking into the possibility of doing a Cassini like mission using solar power.  Karen wanted to know how long it took Cassini to orbit Saturn.  The answer required knowing the specific tour Cassini was undertaking at the time but anywhere from 6-7 days to a few months depending on the tour.  I asked Linda how JPL planned these tours so don’t miss how this is done and how a mission is planned for a spacecraft such as Cassini.  Doug emailed in another question about possible ion propulsion usage and Burton in Montreal wanted to know if a Saturn probe mission might be part of the new NASA New Frontier Mission group being planned.  Many times during the show Linda referenced building on the shoulders of the Voyager spacecraft and its Saturn system information.  Todd talked about the end of Cassini which prompted Linda to describe the final mission plan for this terrific spacecraft. You can read about this final mission at http://news.discovery.com/space/cassini-grand-finale-nasas-saturn-missions-daring-end-140707.htm.  John in Philadelphia was the last to ask a question as he wanted to know the size and shape of Cassini, what it looked like.  Linda did a great job explaining the size and shape, and schematic for Cassini.

 

Please post your comments/questions on TSS blog above.  Linda can be reached through JPL or The Space Show.

Kelvin F. Long, Sunday, 1-11-15 January 12, 2015

Posted by The Space Show in Uncategorized.
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , ,
add a comment

Kelvin F. Long, Sunday, 1-11-15

http://archived.thespaceshow.com/shows/2391-BWB-2015-01-11.mp3

Your Amazon Purchases Helps Support TSS/OGLF (see www.onegiantleapfoundation.org/amazon.htm)

If you rate shows on live365.com, email me your rating reasons to help improve the show

Guest:  Kelvin F. Long.  Topics: Interstellar spaceflight, his book, “Beyond the Boundary.”  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 Kelvin F. Long to the show to discuss both his new book, “Beyond the Boundary” and interstellar human spaceflight.  During the first segment of our 1 hour 51 minute show, Mr. Long introduced his book which has been published on http://www.lulu.com by The Initiative for Interstellar Studies.  We discussed the book and many of the contributing authors, then I asked our guest if we might have interstellar starships next century.  Mr. Long said it was possible but also a very big problem so you do not want to miss this comprehensive discussion.  During this segment, we addressed warp drive, worm holes, negative energy, and public sector responsibility for interstellar spaceflight.  Kelvin provided us with some interesting history going back to the 1930s and the British Interplanetary Society (BIS) early work about rockets to the Moon.  Later, nuclear propulsion came up in terms of both fission and fusion technology.  As part of this discussion, Kelvin mentioned problems caused by the Outer Space Treaty. In addition, we discussed Project Dragonfly which is a laser sail competition, robotic payloads, Project Daedelus, and more.  Listener Helen asked our guest about the plausibility of a hibernation ship and BJohn asked about gravitational forces of the Sun and interstellar travel.  John called from Ft. Worth to seek a clarification about the Outer Space Treaty comments and to talk about NTG usage in space.

In the second segment, Kelvin talked about Project Icarus and directed us to http://www.icarusinterstellar.org.  We also talked about the growing interstellar community and some of those in different industry segments working for and supporting interstellar travel.  Tim called to ask about the fission fragment rocket and Mach’s thruster.  BJohn asked about ET civilizations and the Fermi Paradox.  Kelvin had much to say on this subject.  Near the program’s end, I asked Kelvin for an action plan. He proposed one covering three areas:  Education, Business, and New Technologies.  Make sure you here the details of his plan.  Our guest offered us powerful closing comments.

Please post your comments/questions on TSS blog.  You can reach Kelvin F. Long through me or the websites mentioned above plus his personal site, http://thestarshipman.com.