Guest:  Open Lines discussion with Dr. David Livingston as host;  Topics:  Multiple discussion topics with both callers and listeners sending us email comments/questions.  Our listener calls were lengthy while providing good discussion commentary.  See the Tags, repeated below, for topics discussed on this program.

Guest:  George Dvorsky; Topics:  The article for Gizmodo written by our guest titled "Humans Will Never Colonize Mars, " July 30, 2019. 

Tags:  Liz Kennick, Teachers In space, Flight Experiments Program, 100 teachers program, Arduino programming, balloon missions, microgravity flights, high altitude Perlan glider flights, suborbital opportunities, science payloads, Perlan CubeKit Contest, target grade levels, teacher qualifications, Pathfinder Astronauts, spacesuits, human factors, Final Frontier Design, 3D printing and their organization

Guest:  Elizabeth (Liz) Kennick; Topics: Teachers In Space programs, news and updates, 2019 possibilities, contests and activities.

Guest:  Dr. Patrick Collins;  Topics:  Space tourism and economics, reusable launch vehicles, SSP, space economics, lunar tourism, Mars.  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.

Tags:  Dr. Erik Seedhouse, Kirby Cole, Victor Kitmanyen, Chris Nguyen, Embry Riddle Aeronautical University,  Spacesuit Operations Lab, Suborbital Space Flight Simulator, Lynx, Virgin Galactic, Blue Origin, human factors, gravity prescription, human factors, astronaut training, spacesuit pressure, NASA, commercial spacesuits, spacesuit industry, Biosuit, SpaceShipTwo, glide slopes, Dream Chaser, space development timelines