2016 Volume 1 Pages 8-15
The first SSPS idea was conceived by Dr. Peter Glaser and then almost 50 years have passed. Domestic research activities have been continuing for 30 years however, even now it is difficult to forecast when SSPS will realize. And the current SSPS R&D roadmap does not reflect the real situation, and does not widely supported by stakeholders. JAXA started the two committees with the outside member. The SSPS Economic Feasibility Committee from 2014, and SSPS Technical Committee from 2014. The discussion for the goal of building new SSPS scenario/roadmap have been continued within these committee members. The outline of the discussion is described in this paper.