| Type | Nuclear-powered spacecraft |
| Legacy | Shift towards chemical rocket propulsion • Safer manned space exploration • Lasting political changes on Earth |
| Project | Project Orion |
| Purpose | Lunar colonization • Martian colonization |
| Disaster | 1991 disaster on Mars |
| Launched | 1980s |
| Developed by | Unspecified |
| Result of disaster | Moratorium on nuclear propulsion in space |
| Successful missions | Initial missions |
