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Asteroid fragments upend theory of how life on Earth bloomed

Nature
Summary
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75% Informative

Bennu contains all 5 of the nucleobases that form DNA and RNA on Earth and 14 of the 20 amino acids found in known proteins.

The asteroid’s amino acids hold a surprise. On Earth , amino acids in living organisms predominantly have a left-handed’ chemical structure. Bennu, however, contains nearly equal amounts of these structures and their right-handed', mirror-image forms.

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84

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90

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35

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formal

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English

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60

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not offensive

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not hateful

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long-living

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