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Goddard TV Video Tape: G2012-104 -- Fermi EBL Media Telecon

Movie

Title
Artist's rendering of the process described above. Fermi Observation of Early Background Light Animation
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. This version has music and additional elements on it. For an animation-only version, go here . Credit: NASA's Goddard Space Flight Center/Cruz deWilde Watch this video on the NASAexplorer YouTube channel. For complete transcript, click here . NASA's Fermi Explores the Early Universe