Guest: Open Lines with Dr. David Livingston. Topics: A variety of topics suggested by the host and driven by listener phone calls. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming.

Guest: Dan Adamo. Topics: On orbit propellant depots and associated launch and flight dynamics. We welcomed Dan Adamo back to The Space Show to talk about on orbit propellant depots. Please remember that you can post comments, your own material, and even rate this show at the new Space Show blog, "The Space Show's Way Outside The Box Ideas And Plans Blog" at http://thespaceshowoutsidethebox.blogspot.com. Please use it. Our show was more than two hours and divided into two segments.

Guest: Brian Enke. Topics: Mars, space policy, self publishing, life sciences, science fiction, asteroids. Brian Enke returned to the show to discuss Mars and space science/policy related issues, plus his science fiction writing and work in the self publishing field in this two hour program in two segments. In our first segment, I asked him when he thought humans would set foot on Mars. Brian's response was certainly measured and concerned.

Guest: Dr. Ralph McNutt: American spacecraft and plutonium power sources, Mercury, Messenger, Cassini. We welcomed Dr. Ralph McNutt of the Applied Physics Lab to the program. We started our first segment with a discussion of the use of Plutonium 238 as a power source for American spacecraft, asking the questions about why there appears to be so much resistance to anything nuclear in space by broad groups of concerned people. As you will hear, Dr. McNutt said that by using Plutonium 238, we were and are able to do things in space with various missions that we could not do otherwise. Dr.

Guest: Open Lines with Dr. David Livingston. Topics: Nuclear rockets and propulsion, bone loss, radiation, VASIMR. This Open Lines program was a two hour plus discussion without a break regarding many issues ranging from space policy to nuclear propulsion. The VASIMR was again a focal point for discussion and this took us into a lengthy discussion of nuclear propulsion. Nuclear Thermal Rockets were the main topic but other nuclear propulsion concepts were discussed. This seemed to be the overwhelming topic as caller after caller talked about nuclear propulsion as well as radiation.