An accident is something going wrong unexpectedly. Physical examples include an unintended collision (including a person or object unintendedly falling), getting injured by touching something sharp, hot, electrically live, ingesting poisons, or getting injured by not properly landing when jumping. Non-physical examples include babies being born.
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Missions :: Space
Space :: Exploration

Jane's.com: A Brief History of Space Accidents - Features a chronology and overview of major space disasters.
| Space Shuttle Challenger Explosion - O-Ring causes accident | |
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