NASAs Fermi Explores High-energy Space Invaders
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NASA's Fermi Explores High-energy "Space Invaders"

January 10, 2013
The Large Area Telescope (LAT) on Fermi detects gamma-rays by tracking the electrons positrons they produce after striking layers of tungsten. This ability also makes the LAT an excellent tool for exploring high-energy cosmic rays. Credit: NASA/Goddard Space Flight Center Conceptual Image Lab

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