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NASA's Fermi Finds Gamma-ray Galaxy Surprises
“Compton showed us that two classes of active galaxies emitted gamma rays — blazars and radio galaxies,” said Luigi Foschini at Brera Observatory of the…
NASA's Fermi Telescope Probes Dozens of Pulsars
In two studies published in the July 2 edition of Science Express, international teams have analyzed gamma-rays from two dozen pulsars, including 16 discovered…
NASA's Fermi Telescope reveals a population of radio-quiet gamma-ray pulsars
A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope is solving the mystery of previously unidentified gamma-ray sources and helping…
Tunable semiconductors possible with hot new material called graphene
Today's transistors and light emitting diodes (LED) are based on silicon and gallium arsenide semiconductors, which have fixed electronic and optical…
NASA's Fermi Mission, Namibia's HESS Telescopes Explore a Blazar
The picture that emerges from these first-ever simultaneous observations with optical, X-ray and new-generation gamma-ray telescopes is much more complex than…
Nano-Sonar Uses Electrons to Measure under the Surface
Just as sonar sends out sound waves to explore the hidden depths of the ocean, electrons can be used by scanning tunnelling microscopes to investigate the…