Carl Sagan explains Drake Equation (LECTURE) +links in description- Español CC

ARE WE ALONE IN THE UNIVERSE? - ESTAMOS SOLOS EN EL UNIVERSO?
The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy.
(Español)
La ecuación de Drake es un argumento probabilístico utilizado para estimar el número de civilizaciones extraterrestres activas y comunicativas en la Vía Láctea.
El mismo video en Español - Carl Sagan - Ecuacion Drake: https://www.youtube.com/watch?v=gifSp3_q0rM
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Must watch this first link – Debes ver el primer link
HOW THE UNIVERSE IS WAY BIGGER THAN YOU THINK (several sub languages, Español CC)
https://www.youtube.com/watch?v=Iy7NzjCmUf0
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Universe Size Comparison 3D - Planets (several sub languages, Español CC)
https://www.youtube.com/watch?v=i93Z7zljQ7I
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The Fermi Paradox — Where Are All The Aliens? (1/2) (several sub languages, Español CC)
https://www.youtube.com/watch?v=sNhhvQGsMEc
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Calculating The Odds of Intelligent Alien Life - Jill Tarter (several sub languages, Español CC)
https://www.youtube.com/watch?v=6AnLznzIjSE
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Seager Equation for number of habitable planets | Sara Seager and Lex Fridman (2020)(English)
https://www.youtube.com/watch?v=HWeLe9Hz3eo
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209 segundos que te harán cuestionar toda tu existencia (Español)
https://www.youtube.com/watch?v=cZGIa9I43pI
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La paradoja de Fermi – ¿Dónde están todos los aliens? (1/2) (Español)
https://www.youtube.com/watch?v=Y_NQZvkNahM
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