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NASA | Fermi Explores the Early Universe

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Published on Nov 1, 2012

This animation tracks several gamma rays through space and time, from their emission in the jet of a distant blazar to their arrival in Fermi's Large Area Telescope (LAT). During their journey, the number of randomly moving ultraviolet and optical photons (blue) increases as more and more stars are born in the universe. Eventually, one of the gamma rays encounters a photon of starlight and the gamma ray transforms into an electron and a positron. The remaining gamma-ray photons arrive at Fermi, interact with tungsten plates in the LAT, and produce the electrons and positrons whose paths through the detector allows astronomers to backtrack the gamma rays to their source.

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Top Comments

  • Jake Blackford

    Read the description EVERYTIME you watch a video... It will help you gain insight and understand the video more clearly. :D?

    · 30

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    in reply to JZS (Show the comment)
  • nutsbutdum

    When I think that those gamma rays started their journey waaaaay before there was a telescope to intercept them, it just blows my mind!

    · 19

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  • door5529

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  • Abram Rex Joaquin

    I call Your Bullshit...

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    in reply to Ruskotyara28 (Show the comment)
  • Lazyier123

    ooo shiny!

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    in playlist Astrophysics
  • kula sekhar

    who wud dislike dis :O!!!!!!

    

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  • JZS

    You're a mean friend

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    in reply to brickedin21 (Show the comment)
  • jose medina

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  • jose medina

    señores presidentes me han hecho saber sobre un proyecto , sistema tecnología de avanzada con el que pueden saber todo lo que pensamos nuestros recuerdos desde la niñees y todo lo que hemos hecho en el transcurso de nuestras vidas pudiendo por medio de ONDAS ELECTROMAGNÉTICAS directas a los sistemas del cerebro dirigir todos los sistemas del cuerpo y sus funciones , pueden hacer que soñemos proyectan ideas a nuestro cerebro , controlan nuestra mente y cerebro

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  • Ruskotyara28

    ILLUMINATI CABAL DEMONIC SPACE AGENCY KNOWN AS NASA WAS BLOCKED INFORMATIONS FROM SOLAR OBSERVATORY !! THEY HIDE REPTILIAN ANUNNAKI SPACE SHIPS AROUND THE SUN IN INTERSTS OF JEWISH DEMONIC BLACK GOVERNEMENT IN WASHINGTON WITH THEIR BLACK-PRIEST IS OBAMA DIRECT ANCESTOR OF THE LEADER OF MOST POWERFULL WOODOO CLAN FROM AFRICA - THE KEEPERS OF JEWISH DEMONIC RITUALS OF HUMAN SACRIFICE.

    ASK JEWISH NASA AGENCY JNA WHY THEY HAVE DEMONIC HORN LOGO FOR THEIR SATELLITES AND ROCKETS??

    watch?v=-0HRzgpWWc8

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