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Archived January 2, 1998
January 2, 1998
The discovery of the 8th planet outside the solar system challenges previous theories
The knowledge site system
January 2, 1998
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Carl Sagan on: The Colliding Worlds of Immanuel Volikovsky
Carl Sagan
January 2, 1998
2 תגובות
Carl Sagan on: The Colliding Worlds of Immanuel Volikovsky Part II
Carl Sagan
January 2, 1998
10 תגובות
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