Concepts submitted to Project Outreach for Space Exploration and Extended Habitation serve to highlight a number of important research areas, and in particular, the importance of broad-based support for research into power and propulsion technologies. Nuclear energy sources emerge as very strong candidates for both space and surface power systems. Recent interest includes NERVA-like nuclear thermal rockets, the SP-100 reactor, and Topaz II and nuclear rocket technology from the former Soviet Union. Power beaming also has long-term potential for enormous utility.
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