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Realm Of The Galaxies

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Uploaded by on Apr 25, 2009

Science & Reason: http://tinyurl.com/ScienceReason

Realm Of The Galaxies - Best of Carl Sagan's Cosmos (Part 3). This edited version contains images from Hubble (2008/2009).

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http://www.youtube.com/SagansCosmos
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BEST OF CARL SAGAN'S "COSMOS":

1) 10 Years After: Carl Sagan & Ann Druyan Reflect:
http://www.youtube.com/watch?v=leTNfwfH0Jc
2) Lost Between Immensity And Eternity:
http://www.youtube.com/watch?v=vIVsDg6U0LU
3) The Realm Of The Galaxies:
http://www.youtube.com/watch?v=1axoV6HhWfI
4) Our Galaxy, The Milky Way:
http://www.youtube.com/watch?v=eOazBTHzRYA
5) Our Solar System:
http://www.youtube.com/watch?v=iBqjob-UVeo
6) Eratosthenes And The Round Earth Model:
http://www.youtube.com/watch?v=en5UKtcNujI
7) The Library Of Alexandria:
http://www.youtube.com/watch?v=vVQs4B2jAW0
8) A Short History Of The Universe:
http://www.youtube.com/watch?v=7n2r0qOxJ6k
9) Artificial And Natural Selection:
http://www.youtube.com/watch?v=i3uToVWZkWM
10) The Cosmic Year:
http://www.youtube.com/watch?v=yFqbm_94nTM
11) Tree Of Life - 4 Billion Years Of Evolution:
http://www.youtube.com/watch?v=KF0UECN4ndA
12) The Miracle Of Life:
http://www.youtube.com/watch?v=TOyojWeOYNA
13) DNA - The Common Basis Of Life:
http://www.youtube.com/watch?v=ecmuvjSykf8
14) Abiogenesis The Origin Of Life:
http://www.youtube.com/watch?v=yet1xkAv_HY
15) Astronomy vs Astrology:
http://www.youtube.com/watch?v=ImaQS9NJ0nI
16) Pictures In The Sky:
http://www.youtube.com/watch?v=iwCAwc4bge4
17) Ancient Astronomy:
http://www.youtube.com/watch?v=H-5dwJwau1Y
18) Triumph Of Modern Science Over Medieval Superstition:
http://www.youtube.com/watch?v=8lfmRqT-B_c
19) The Mysterious Tonguska Event:
http://www.youtube.com/watch?v=irVof7adq4s

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A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter.

The name is from the Greek root galaxias [γαλαξίας], meaning "milky," a reference to the Milky Way galaxy. Typical galaxies range from dwarfs with as few as ten million stars up to giants with a hundred trillion stars, all orbiting the galaxy's center of mass.

Galaxies may contain many multiple star systems, star clusters, and various interstellar clouds. The Sun is one of the stars in the Milky Way galaxy; the Solar System includes the Earth and all the other objects that orbit the Sun.

http://en.wikipedia.org/wiki/Galaxy

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Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).

He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.

A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster.

During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method.

http://www.carlsagan.com
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  • who else LOVES his voice?

  • What kind of confused person would votebot Carl Sagan ?

    Any religous zealot.

    It makes me sick.

    I'll come back every hour on the hour today to give this 5 stars.

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  • Good Video. Very Informative. Thanks for shared

  • how can anyone dislikes this video ?? hmmm

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