NASA’s Fermi Gamma-ray Space Telescope team plans to expand the telescope’s range into the uncharted electromagnetic range, after the telescope’s more than three years in space.
The Large Area Telescope (LAT) “scans the sky every three hours, continually deepening its portrait of the sky in gamma rays, the most energetic form of light.” Most visible light is between two and three electron volts, “the LAT detects gamma rays with energies ranging from 20 million to more than 300 billion electron volts.” Since gamma rays at higher energies are rare, the LAT may only detect one every four months.
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