Guest:  Dr. Martin Ross;  Topics:  The space industry and the atmosphere, climate change, ozone layer, space compared to aviation, reentry, launch, stratosphere, creating dust in the atmosphere, research models.

Guest:  Open Lines with a special appearance by Dr. John Jurist;  Topics: A response to the Jim Davis blog post re SpaceX and relevance, tardigrades, planetary protection, Outer Space Treaty and more.

Guest:  Dr. Ajay Kothari; Topics: "Railroad to Moon And Mars," rocket options, payloads, rocket fuel, lunar return to the surface, lava tubes, Mars, spaceflight costs, human spaceflight & more.  Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website, www.thespaceshow.com.   Comments and questions should be relevant to the specific Space Show program.

Gust:  Dr. Linda Spilker;  Topics:  The Cassini Grand Finale, all things Saturn and more.  Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website, www.thespaceshow.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.

Guest:  Dr. Jason Reimuller; Topics:  Project PoSSUM, Citizen Science, Mesospheric research, Noctilucent Cloud research & more.  Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website, www.thespaceshow.com.  Comments and questions should be relevant to the specific Space Show program.