Universe 

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.


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Credits

Cruz deWilde (Avant Gravity): Lead Animator
Scott Wiessinger (USRA): Producer
Francis Reddy (Syneren Technologies): Producer
Francis Reddy (Syneren Technologies): Writer
Please give credit for this item to:
NASA/Goddard Space Flight Center/Cruz deWilde

Short URL to share this page:
http://svs.gsfc.nasa.gov/goto?11130

Mission:
Fermi Gamma-ray Space Telescope

Data Used:
Fermi

This item is part of this series:
Astrophysics Animations

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

Keywords:
SVS >> Galaxy
SVS >> Gamma Ray
SVS >> HDTV
SVS >> Ultraviolet
SVS >> Black Hole
SVS >> Astrophysics
SVS >> Universe
SVS >> Space
SVS >> Fermi
SVS >> Blazar
SVS >> Star
NASA Science >> Universe