Unafraid of the Dark

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"Unafraid of the Dark"
Cosmos: A Spacetime Odyssey episode
Episode no.Episode 13
Directed by Ann Druyan
Written byAnn Druyan
Steven Soter
Narrated by Neil deGrasse Tyson
Produced byLivia Hanich
Steven Holtzman
Featured music Alan Silvestri
Editing byJohn Duffy
Michael O'Halloran
Eric Lea
Production code113
Original air dateJune 8, 2014 (2014-06-08)
Running time44 minutes
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"Unafraid of the Dark" is the thirteenth and final episode of the American documentary television series Cosmos: A Spacetime Odyssey and its series finale. It premiered on June 8, 2014, on Fox and aired on June 9, 2014, on the National Geographic Channel. The episode was written by Ann Druyan and Steven Soter, and directed by Ann Druyan, making this her series directorial debut. The episode explores the mysteries of dark energy and dark matter, as well as the contributions and theories of Swiss astronomer Fritz Zwicky, who furthered our understanding of "supernovae, neutron stars and 'standard candles.'" [1] The finale reveals a recording of life on Earth - the final message on the golden record of the space probe, Voyager. [2] The episode ends with Carl Sagan's (host of the original Cosmos ) iconic speech on Earth as the "Pale Blue Dot." [3]

Contents

Episode summary

The Pale Blue Dot, taken by Voyager I from outside the orbit of Neptune Pale Blue Dot.png
The Pale Blue Dot , taken by Voyager I from outside the orbit of Neptune

Tyson begins the episode by noting how the destruction of the Library of Alexandria lost much of humanity's knowledge to that point. He then contrasts on the strive for humanity to continue to discover new facts about the universe and the need to not close off further discovery.

Tyson then proceeds to describe the discovery of cosmic rays by Victor Hess through high-altitude balloon trips, where radiation increased the farther one was from the surface. Swiss Astronomer Fritz Zwicky, in studying supernovae, postulated that these cosmic rays originated from these events instead of electromagnetic radiation. Zwicky would continue to study supernovae, and by looking at standard candles that they emitted, estimated the movement of the galaxies in the universe. His calculations suggested that there must be more mass in the universe than those apparent in the observable galaxies, and called this dark matter. Initially forgotten, Zwicky's theory was confirmed by the work of Vera Rubin, who observed that the rotation of stars at the edges of observable galaxies did not follow expected rotational behavior without considering dark matter. This further led to the discovery of dark energy by Edwin Hubble to account for the known rate of expansion of the universe beyond the visible and dark matter mass.

Tyson then describes the interstellar travel, using the two Voyager probes. Besides the abilities to identify several features on the planets of the solar system, Voyager I was able to recently demonstrate the existence of the Sun's variable heliosphere which help buffer the Solar System from interstellar winds. Tyson describes Carl Sagan's role in the Voyager program, including creating the Voyager Golden Record to encapsulate humanity and Earth's position in the universe, and convincing the program directors to have Voyager I to take a picture of Earth from beyond the orbit of Neptune, creating the image of the Pale Blue Dot. Tyson concludes the series by emphasizing Sagan's message on the human condition in the vastness of the cosmos, and to encourage viewers to continue to explore and discover what else the universe has to offer.

The series concludes with the empty-seated Ship of the Imagination leaving Earth and traveling through space as Tyson looks on from planet Earth.

Reception

The episode received a 1.1/3 in the 18-49 rating/share, with 3.09 million American viewers watching on Fox. [4]

Related Research Articles

<span class="mw-page-title-main">Ann Druyan</span> American author and producer (born 1949)

Ann Druyan is an Emmy and Peabody Award-winning American documentary producer and director specializing in the communication of science. She co-wrote the 1980 PBS documentary series Cosmos, hosted by Carl Sagan, whom she married in 1981. She is the creator, producer, and writer of the 2014 sequel, Cosmos: A Spacetime Odyssey and its sequel series, Cosmos: Possible Worlds, as well as the book of the same name. She directed episodes of both series.

<span class="mw-page-title-main">Carl Sagan</span> American astrophysicist, cosmologist and author (1934–1996)

Carl Edward Sagan was an American astronomer and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect.

<span class="mw-page-title-main">Voyager Golden Record</span> Two phonograph records on board Voyager spacecraft

The Voyager Golden Records are two identical phonograph records, one of each which was included aboard the two Voyager spacecraft launched in 1977. The records contain sounds and images selected to portray the diversity of life and culture on Earth, and are intended for any intelligent extraterrestrial life form who may find them. The records are a time capsule.

<i>Cosmos: A Personal Voyage</i> 1980 science documentary series

Cosmos: A Personal Voyage is a thirteen-part, 1980 television series written by Carl Sagan, Ann Druyan, and Steven Soter, with Sagan as presenter. It was executive-produced by Adrian Malone, produced by David Kennard, Geoffrey Haines-Stiles, and Gregory Andorfer, and directed by the producers, David Oyster, Richard Wells, Tom Weidlinger, and others. It covers a wide range of scientific subjects, including the origin of life and a perspective of our place in the universe. Owing to its bestselling companion book and soundtrack album using the title, Cosmos, the series is widely known by this title, with the subtitle omitted from home video packaging. The subtitle began to be used more frequently in the 2010s to differentiate it from the sequel series that followed.

<span class="mw-page-title-main">Fritz Zwicky</span> Swiss astronomer (1898–1974)

Fritz Zwicky was a Swiss astronomer. He worked most of his life at the California Institute of Technology in the United States of America, where he made many important contributions in theoretical and observational astronomy. In 1933, Zwicky was the first to use the virial theorem to postulate the existence of unseen dark matter, describing it as "dunkle Materie".

<span class="mw-page-title-main">Brannon Braga</span> American television producer, director, and screenwriter

Brannon Braga is an American television producer, director and screenwriter. Best known for his work in the Star Trek franchise, Braga was a key creative force behind three of the franchise's live action series. He later became an executive producer and writer on several Fox shows including 24, Terra Nova, and The Orville. His film credits include Mission: Impossible 2, Star Trek Generations and Star Trek: First Contact.

<span class="mw-page-title-main">Neil deGrasse Tyson</span> American astrophysicist (born 1958)

Neil deGrasse Tyson is an American astrophysicist, author, and science communicator. Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1991 to 1994, he was a postdoctoral research associate at Princeton University. In 1994, he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210 million reconstruction project, which was completed in 2000. Since 1996, he has been the director of the Hayden Planetarium at the Rose Center for Earth and Space in New York City. The center is part of the American Museum of Natural History, where Tyson founded the Department of Astrophysics in 1997 and has been a research associate in the department since 2003.

<i>Cosmos</i> (Sagan book) 1980 book by Carl Sagan

Cosmos is a popular science book written by astronomer and Pulitzer Prize-winning author Carl Sagan. It was published in 1980 as a companion piece to the PBS mini-series Cosmos: A Personal Voyage with which it was co-developed and intended to complement. Each of the book’s 13 illustrated chapters corresponds to one of the 13 episodes of the television series. Just a few of the ideas explored in Cosmos include the history and mutual development of science and civilization, the nature of the Universe, human and robotic space exploration, the inner workings of the cell and the DNA that controls it, and the dangers and future implications of nuclear war. One of Sagan's main purposes for both the book and the television series was to explain complex scientific ideas in a way that anyone interested in learning can understand. Sagan also believed the television was one of the greatest teaching tools ever invented, so he wished to capitalize on his chance to educate the world. Spurred in part by the popularity of the TV series, Cosmos spent 50 weeks on the Publishers Weekly best-sellers list and 70 weeks on the New York Times Best Seller list to become the best-selling science book ever published at the time. In 1981, it received the Hugo Award for Best Non-Fiction Book. The unprecedented success of Cosmos ushered in a dramatic increase in visibility for science-themed literature. The success of the book also served to jumpstart Sagan's literary career. The sequel to Cosmos is Pale Blue Dot: A Vision of the Human Future in Space (1994).

Jon Lomberg is an American space artist and science journalist. He was Carl Sagan's principal artistic collaborator for more than twenty years on many projects from 1972 through 1996. In 1998, the International Astronomical Union officially named an asteroid in recognition of his achievements in science communication. He was NASA's Design Director for the Golden Record on the Voyager spacecraft; the cover he designed is expected to last at least a billion years.

<span class="mw-page-title-main">Symphony of Science</span> Music project by John D. Boswell

The Symphony of Science is a music project created by Washington-based electronic musician John D. Boswell. The project seeks to "spread scientific knowledge and philosophy through musical remixes." Boswell uses pitch-corrected audio and video samples from television programs featuring popular educators and scientists. The audio and video clips are mixed into digital mashups and scored with Boswell's original compositions. Two of Boswell's music videos, "A Glorious Dawn" and "We are All Connected", feature appearances from Carl Sagan, Richard Feynman, Neil deGrasse Tyson, Bill Nye, and Stephen Hawking. The audio and video is sampled from popular science television shows including Cosmos, The Universe, The Eyes of Nye, The Elegant Universe, and Stephen Hawking's Universe.

<span class="mw-page-title-main">Contents of the Voyager Golden Record</span>

The Voyager Golden Record contains 116 images and a variety of sounds. The items for the record, which is carried on both the Voyager 1 and Voyager 2 spacecraft, were selected for NASA by a committee chaired by Carl Sagan of Cornell University. Included are natural sounds, musical selections from different cultures and eras, spoken greetings in 59 languages, human sounds like footsteps and laughter, and printed messages from President Jimmy Carter and U.N. Secretary-General Kurt Waldheim.

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References

  1. Saunders, Cherie (June 6, 2014). "Neil deGrasse Tyson's 'Cosmos' Goes 'Dark' for Season Finale". Eurweb.com. Retrieved June 7, 2014.
  2. Girard, Raoul (June 7, 2014). "The Final Journey of the Legendary Cosmos". FrenchTribune.com. Retrieved June 7, 2014.
  3. Delhi Daily News (June 7, 2014). "Cosmos explores 'Dark Energy' in series finale". DelhiDailyNews.com. Retrieved June 7, 2014.
  4. Bibel, Sara (June 10, 2014). "Sunday Final Ratings: NBA Finals Numbers". TV by the Numbers. Archived from the original on June 13, 2014. Retrieved June 12, 2014.