| Name | Poseidon |
| Type | Asteroid |
| Method | Nuclear charges for fracturing the asteroid |
| Mission | International collaboration to defuse the asteroid |
| Discovery | Late 20th century |
| Consequences | Radioactive debris from nuclear charges |
| Threat status | Collision course with Earth (resolved) |
| Collision year | 2050 (averted) |
| World's response | International collaboration for future asteroid defense and accelerated Mars Colonization |
| Mars Colonization | Development of asteroid defenses |
