Carl Sagan Archival Lecture Audio - 1977 Origin Stories Podcast
1:36:01
Carl Sagan's 1994 "Lost" Lecture: The Age of Exploration
53:19
Einstein's Quantum Riddle | Full Documentary | NOVA | PBS
54:18
V. Completa. Preguntas y respuestas sobre el cosmos. Carlos Briones, científico y escritor
1:11:37
Professor Brian Cox: How To Find Your Place In The Universe
2:07:07
The 1993 Bunyan Lecture: Carl Sagan - “Is There Intelligent Life on Earth?”
42:14
Michio Kaku: The Universe in a Nutshell (Full Presentation) | Big Think
1:00:08
Planets beyond our sun - Carl Sagan's 1977 Christmas Lectures 6/6
59:38