| 11. | Robin-Evans claimed that the Dropa tribe was of extraterrestrial origin and had crashed on Earth.
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| 12. | In the " Pathfinder Roleplaying Game ", the froghemoth's possible extraterrestrial origins are expanded upon.
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| 13. | The absence of DNA was key to Louis and Kumar's hypothesis that the cells were of extraterrestrial origins.
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| 14. | Within those Buckyball cavities, Becker said, the researchers found a helium isotope thought to be of extraterrestrial origin.
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| 15. | Organic compounds, thought to be the starting material for prebiotic chemistry, could have partly had an extraterrestrial origin.
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| 16. | Hill was a strong proponent of the extraterrestrial hypothesis, which suggests that some UFOs represent structural craft of extraterrestrial origin.
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| 17. | In the finished film, the villains are explained to be gangsters, and no reference is made to any extraterrestrial origin.
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| 18. | Mulder tells Skinner that both Merkmallen and Sandoz espoused panspermia, a theory suggesting an extraterrestrial origin to life on Earth.
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| 19. | The extraterrestrial origin was seen by Regalado as challenging the notion that Anglo-Saxon ancestry was the source of all might.
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| 20. | The Kents kept a small fragment of debris from the ship and learned of its, and the child's, extraterrestrial origins.
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