Carl Sagan On Alien Civilizations Neil deGrasse Tyson Videos 5:41 10 years ago 1 414 758 Далее Скачать
Carl Sagan explains why aliens are not visiting us all the time vson8 4:46 10 years ago 895 188 Далее Скачать
In Search of Ancient Astronauts (1973) | Rod Serling Carl Sagan Reelblack One 51:36 5 years ago 203 153 Далее Скачать
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Carl Sagan, Stephen Hawking and Arthur C. Clarke - God, The Universe and Everything Else (1988) TheScienceFoundation 52:11 13 years ago 3 513 494 Далее Скачать
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1967: CARL SAGAN on the search for INTELLIGENT LIFE | Where Is Everybody? | BBC Archive BBC Archive 9:04 2 years ago 24 676 Далее Скачать
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Life Beyond Earth and the Mind of Man - Carl Sagan on Aliens NASA Film The Federal File 26:53 7 years ago 12 297 Далее Скачать
Do aliens exist? Carl Sagan & Frank Drake on Intelligent Life in the Universe The Planetary Society 1:37 6 years ago 7 848 Далее Скачать
Carl Sagan on Contacting Extraterrestrials with Radio Signals in Outer Space - FindingUFO FindingUFO 8:36 7 years ago 7 683 Далее Скачать
The true story behind Carl Sagan’s cult classic, Contact | Jill Tarter for Big Think Big Think 9:24 2 years ago 985 858 Далее Скачать
Carl Sagan Predicted The Mess 2021 Would Be 25 years Ago MSNBC 4:14 3 years ago 5 642 905 Далее Скачать
