| 11. | On 16 March 2012, a supernova was discovered in M95.
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| 12. | Designated SN 1998bu, this was a Type Ia supernova explosion.
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| 13. | This was verified three years later by supernova observations in 1998.
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| 14. | It may be massive enough to produce an electron capture supernova.
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| 15. | One supernova, SN 1981A, has been recorded in it.
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| 16. | He also discovered SN 2004eg, an extra-galactic supernova.
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| 17. | From these supernova comes the heavy elements and eventually the planets.
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| 18. | The rate of supernova discovery steadily increased throughout the twentieth century.
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| 19. | In the 1990s, several automated supernova search programs were initiated.
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| 20. | Nova, SuperNova and Solenza only came in a liftback body.
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