We welcomed Dr. Patrick Collins back to the program for a two segment 118 minute discussion regarding space tourism, orbital tourism, suborbital tourism, space tourism markets and economics, development issues and challenges, competition and more. Other topics discussed included space solar power and why our guest thought its time had come and gone. In addition, we looked at rocket reusability. Listeners called and asked several questions including about retirement homes on the Moon or Mars, Mars tourism and more. Read the full summary of this program at www.thespaceshow.com for this date, Thursday, May 11, 2017.