Fermi’s main instrument, the Large Area Telescope (LAT), thus operates more like a particle detector. When a gamma ray reaches the telescope, it impacts on a metal foil producing a pair of charged ...

Gamma-ray image of the Fermi bubbles (blue) overlaid on a map of RR Lyrae stars (red) observed by the GAIA telescope. The shape and orientation of the Sagittarius dwarf (Sgr) match those of the ...

NASA’s Fermi Gamma-ray Space Telescope "detected none of the high-energy gamma-ray light" from a nearby supernova. NASA ...

An curved arrow pointing right. NASA's Fermi Gamma-ray Space Telescope can now detect solar flares occuring on the side of the sun it cannot see. This could help scientists better understand solar ...