Manuscript/Mixed Material Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
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Image 1 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 2 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 3 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 4 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 5 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 6 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 7 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 8 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 9 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 10 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 11 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 12 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 13 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 14 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 15 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 16 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 17 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960
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Image 18 of Direct contact among galactic civilizations by relativistic interstellar spaceflight : draft
- Contributor: Sagan, Carl
- Date: 1960