Guest:  Robert (Bob) Zimmerman; Topics: Annual launch rates and predictions, China's Long March 5B, Mars rovers, ancient molecular life on Mars, light carbon atoms, life in the solar system, Carbon-12, UV light, Musk and Starship, Georgia's preliminary spaceport approval, exploring the lunar poles and more.

Guest:  Robert (Bob)Zimmerman; Topics: Mars, Perseverance, Curiosity, searching for signs of life on Mars, suborbital tourism, Virgin Galactic, SpaceX, Blue origin, the NASA Mars program, possible NASA Administrator Artemis, Abraham Accords, Israel and the UAE and multiple other topics.

Guest:  Dr. Kirsten Siebach;  Topics: Mars geology, rovers, searching for life on Mars, planetary protection, forward contamination of Mars and much more. 

Guest:  Barry DiGregorio;  Topics:  Mars life detection, needed Mars experiments, rover findings, planetary protection, human contamination on Mars, Mars contamination on earth, microbiology 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.

Guest:  Rob Manning; Topics:  Human-scale Mars landers, supersonic retro-propulsion (SRP) for Mars landings.  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.