Guest:  Robert (Bob) Zimmerman; Topics:  We discussed a variety of topics starting with the smallsat industry with launchers and ending with comments about the Boeing 737 Max and possible Boeing space impact.  See tags for an idea of all topics discussed.

Guest:  Dr. George Fox;  Topics:  Hardy Earth organisms survive mission sterilization, humans to Mars, Planetary Protection, the lunar environment, RNA sequencing, and more.

Guest:  Dr. Roger Launius;  Topics:  Dr. Launius introduced us to his new book, "Space Exploration: From the Ancient World to the Extraterrestrial Future," which we discussed in detail, including many of the exceptional pictures in the book.

Guest:  Dr. Susan Jewell; Topics:  The Mars Academy projects, programs, and plans.  Also, how best to become a multi-planet species and Going To Space For Earth.

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.