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Carl Sagan's Pale Blue Dot
by
Carl Sagan
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1994
The Age of Exploration
by
Carl Sagan
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1988
Carl Sagan, Stephen Hawking and Arthur C. Clarke - God, The Universe and Everything Else
by
Carl Sagan
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2 others
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Mar 2, 1978
Carl Sagan on The Tonight Show with Johnny Carson
by
Carl Sagan
and
Johnny Carson
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1977
Christmas Lectures 2 - The Outer Solar System and Life
by
Carl Sagan
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1977
Christmas Lectures 3: The History of Mars
by
Carl Sagan
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1977
Christmas Lectures 4: Mars before Viking
by
Carl Sagan
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1977
Christmas Lectures 5: Mars after Viking
by
Carl Sagan
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1977
Christmas Lectures 6 - Planetary Systems Beyond Our Sun
by
Carl Sagan
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How We Know The Earth Is Round
by
Carl Sagan
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4th Dimension - Tesseract, 4th Dimension Made Easy
by
Carl Sagan
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