G. Haskell, Symposium Programme Committee Chair, Vice President, Administration and Programme Development, International Space University e-mail: Haskell@isu.isunet.edu M. Rycroft, Faculty Member, International Space University e-mail: Rycroft@isu.isunet.edu The theme of the fourth annual symposium arranged by the International Space University (ISU) was "International Space Station: The Next Space Marketplace". The Symposium covered this topic from...