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Differentiating of spaceflight context based on mission duration.
| Duration | Exemplar missions | Incidents extracted |
|---|---|---|
| Short (<=15 days) | Shuttle, Gemini | 132 |
| Medium (<=6 months) | Skylab/ISS, Soyuz | 124 |
| Long (<=1.5 years) | Salyut, Mir | 197 |
| Longer (<=2 years) | Mars 500 | 72 |
