306:, performed in the 1940s, showed that radio waves are able to travel in space, and that all of humanity's broadcast signals continue to radiate into space from our planet. Tyson says that projects have since looked for similar signals potentially emanating from other solar systems and that the development and lifespan of extraterrestrial civilizations must be considered for such detection to be realized. According to Tyson, civilizations can be wiped out by cosmic events like supernovae, natural disasters such as the
366:, "After several wonderful narrative- and character-driven episodes, it's a bit of a letdown to have the series lapse back into the tenuous connections and aimless wandering of earlier episodes. 'The Immortals' talks a lot about the power of story; too bad it doesn't heed its own counsel in this case."
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stars exist, would offer the best chance of finding established civilizations. He concludes that human intelligence properly applied should allow our species to avoid such disasters and enable us to migrate beyond the Earth before the Sun's eventual transformation into a
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This episode covers the nature of how life may have developed on Earth and the possibility of life on other planets. Tyson begins by explaining how the human development of writing systems enabled the transfer of information through generations, describing how
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to survive the harsh conditions of space. With the motions of solar systems through the galaxy over billions of years, life could conceivably propagate from planet to planet in the same manner.
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similarly records information to propagate life, and postulates theories of how DNA originated on Earth, including
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of meteor collisions from other planets. In the latter case, Tyson explains how comparing the composition of the
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The episode received a 1.1/3 in the 18-49 rating/share, with 3.24 million
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marvel at how many rivers we had to cross on Earth before we found our way to the stars
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Tyson then moves on to consider if life on other planets could exist. He explains how
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demonstrated that material from Mars could transit to Earth, and the ability of some
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ca. 2280 BCE would be one of the first to sign her name to her works, and how
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11th episode of the 1st season of Cosmos: A Spacetime
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82:Neil deGrasse Tyson
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659:Sisters of the Sun
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269:great flood
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212:documentary
78:Narrated by
54:Directed by
728:Categories
568:Carl Sagan
370:References
273:Noah's Ark
244:panspermia
232:Ann Druyan
153:Enheduanna
136:43 minutes
125:2014-05-18
101:John Duffy
98:Editing by
68:Ann Druyan
64:Written by
49:Episode 11
390:Space.com
334:Reception
321:red giant
316:red dwarf
281:evolution
261:Gilgamesh
297:microbes
170:Previous
105:Eric Lea
41:Episode
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