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| physical phenomena > event > celestial event > impact event > comet impact > Shoemaker-Levy 9 collision |
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| Shoemaker-Levy 9 collision comparison table | ||||
| Subject | is an instance of | has duration | is a kind of | has start time |
|---|---|---|---|---|
| comet impact | impact event | |||
| Shoemaker-Levy 9 collision | comet impact | 7 days | July 16, 1994 |
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