Guest:  Dr. Les Johnson; Topics:  Solar sail propulsion and missions plus his science fiction and his new edited book "Stellaris: People of the Stars" which speculates as to what humans will be like when we go to the stars. 

Guest:  Dr. Jeff Coughlin; Topics: Exoplanets, the search for life, five exoplanet detection methods, exoplanet atmosphere biosignature detection and more.

Guest:  Dr. Kirby Runyon;  Topics:  Planetary nomenclature, taxonomy, the IAU and Pluto, the NASA-APL Interstellar Probe Concept Mission and much more.

Guest:  Dr. Alan Hale;  Topics:  Multiple astronomy, telescope and exoplanet subjects. Also Hale-Bopp and other comets. Alan's new Ice and Stone 2020 educational outreach project.

Guest:  Dr. Linda Spilker;  Topics;  New information on Saturn's ring system, Titan, Enceladus, liquid methane oceans, life, NASA missions and more.