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Emily Lakdawalla, Tuesday, 3-10-15 March 11, 2015

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 Emily Lakdawalla, Tuesday, 3-10-15

http://archived.thespaceshow.com/shows/2431-BWB-2015-03-10.mp3

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Guest:  Emily Lakdawalla.  Topics:  We discussed planetary science missions, the outer and inner planets, Ceres, icy moons, and more.  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 back Emily Lakdawalla for a far ranging planetary science and mission discussion.  During the first segment of our 90 minute program, Emily was asked questions about the Planetary Society’s solar sail mission, LightSail.  Look forward to a special Space Show program about this project in the near future.  I asked her about her Cassini Icy Moons article on her Planetary Society blog which can be found at http://www.planetary.org/blogs/emily-lakdawalla.  We talked about the photo mosaics and Emily told us about the software and how any of could easily do similar mosaics.  As you will hear, we talked about icy moons throughout our program.  The Dawn mission with its approach to Ceres was an important discussion topic as was New Horizons on the way to Pluto.  As all of you have heard before, this is the year of the Dwarf Planet!  Dan called with questions about Mars 2020 and the sample return mission.  We touched on human spaceflight and addressed the NASA planetary budget.  Roy called to ask about the Thursday press conference about Ganymede, then before the break we got a question about the Rosetta mission and the Ceres bright spot.

In the second segment, Emily had more to say about New Horizons, how photos and data would be sent back to Earth, and the upcoming cliff hanging moments with New Horizons and why they are considered cliff hanging.  Don’t miss our New Horizons discussion.  Callers and questions came in about Europa, the overall cost of planetary missions for the American taxpayer, the Dawn orbit around Ceres and limitations due to hydrazine.  One listener even asked if there would be public events around New Horizons arriving at Pluto.  Near the end of the segment, Doug sent in several emails asking about Uranus and Neptune and here Emily had much to say in support of such missions.  I asked our guest about her preference between inner and outer planets.  We also talked about returning to the Moon.  Near the end of the program, Carl wanted to know what was going to happen with planetary science after New Horizons.  A series of lunar questions came in with one asking about a lunar sample return.  I asked Emily if a lunar sample return was needed given the quantity of Moon Rocks that we have from the Apollo era.  Don’t miss her most interesting reply with a focus on possible contamination from the lunar Imbrium event.  As our program was ending, Barry wanted to know why we were using radio communications from the outer planets rather than light.

Please post your comments/questions on TSS blog above. Emily Lakdawalla can be reached through her blog or me.

Dr. James (Jim) Benford, Friday, 9-27-13 September 28, 2013

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Dr. James (Jim) Benford, Friday, 9-27-13

http://archived.thespaceshow.com/shows/2094-BWB-2013-09-27.mp3

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Guest:  Dr. James (Jim) Benford.  Topics:  Sailships, “Starship Century,” interstellar travel, Fermi Paradox & more.  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.

We welcomed Dr. James (Jim) Benford to the program to discuss his book (he was the co-editor) “Starship Century,” and his chapter, Sailships, plus his editing of the book.  During our first segment of this 1 hour 26 minute discussion, Dr. Benford introduced us to Microwave Power Beaming, sailships, solar sails, terrestrial beamed power, in-space beamed power and more.  We talked about microwave beaming as a possible space weapon, the storage of beamed energy, and the use of the millimeter band width for beamed power.  Also in our first segment, we talked about possible time lines for development for interstellar travel.  In this discussion, our guest used Alpha Centauri B as a reference point.  Propulsion in general was discussed with a thumbs down for chemical rockets for doing anything like what we were talking about in this segment.  Listeners asked questions as to why interstellar travel was important at this time given it is so far into the future.

In our second segment, we talked about his goals in editing the book and the fact that if it is bought through the book’s website, www.starshipcentury.com, the proceeds are donated to legitimate interstellar organizations and research.   Jim listed several of the organizations being considered for receiving such proceeds and interestingly, most if not all have been guests on The Space Show over the years.  Dr. Benford mentioned conferences and the Arthur C. Clarke Center at UCSD.  We then talked about the Fermi Paradox and factor L as to the probabilities of finding intelligent life someplace other than Earth.  Faster Than Light Travel was a discussion topic, Jim was asked what his non-space friends thought of his microwave beam power work and interstellar travel.  A listener asked about students in these subject, particularly in the UK and the US.

If you have comments or questions, post them on The Space Show blog.  You can reach Dr. Benford through his website, www.jamesbenford.com.

Zac Manchester, Tuesday, 2-5-13 February 6, 2013

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Zac Manchester, Tuesday, 2-5-13

http://archived.thespaceshow.com/shows/1944-BWB-2013-02-05.mp3

Guest:  Zac Manchester.  Topics:  Zac’s KickSat project, cubesats, crowd-funding, & more.  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.

    We welcomed Zac Manchester to the program to discuss his KickSat CubeSat open source mission using 200 Sprite ChipSats.  You can learn more by visiting www.kicksat.net, www.spacecraftresearch.com and http://www.kickstarter.com/projects/251588730/kicksat-your-personal-spacecraft-in-space.  From these websites you can visit the KickSat wiki as well as the KickSat blog.  We started our discussion with Zac Manchester with his providing us with an overview of his KickSat project and Kickstarter as a tool to fund some types of space ventures.  Zac talked about launches being provided by the NASA Educational Launch of Nanosatellites (/ELaNa) program plus the lack of traditional financing which caused Zac to give Kickstarter a try.  The KickSat team started out wanting to raise $30,000 but instead raised nearly $75,000.  He had much to say throughout both segments regarding crowd-funding and the use of Kickstarter.  Zac also described the cubesats and the Sprite ChipSats.  He talked about the importance of reducing the size of the unit and what this meant for mission design, propulsion, technology advancement, lower launch costs, and more.  Several listeners emailed him questions including space debris questions since the 200 Sprite ChipSats would have a short life expectancy and then return to Earth.  He said all would burn up in the atmosphere but he also talked about future missions where the units would float back to Earth as would a piece of paper. Technology advancement for this to happen must take place but he said it was certainly plausible.  Other issues discussed in our first segment included secondary payments and payload integration.  Regarding payload integration, he said their project goes to Cal Poly for peapod integration and then to the Cape from Cal Poly for vehicle integration.  Cal Poly does the peapod integration for academic cubesat projects.  A listener saw the project plans on one of the websites and inquired about making the hardware or buying a kit from Zac’s group.  As you will hear, the project is open source and people are encouraged to buy the off the shelf parts and make their own unit.  Zac mentioned several online stores where the parts could be bought.  We talked about the difficulty in getting a launch for a stand alone cubesat someone might build.

     In the second segment, we took a call from Charles Pooley who talked about building a small launchers to get away from secondary payloads and potential launch delays we he said were the barriers to this industry. Check out www.microlaunchers.com for more on the Pooley idea. Zac then told us about the March 16 workshop at the Hacker Dojo in Silicon Valley on how to set up KickSat ground stations.  Zac described the ground station using Ham bands and suggested the cost would be around $200.00.  Another listener asked Zac for his background & how he got interested in space & a cubesat project.  Zac had much to say about the academic research that inspired him as both a Cornell undergrad and masters student.

      Please post your comments/questions on The Space Show blog above.  You can contact Zac through his project websites and blog.

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