In the late eighth century, Earth was hit by a mystery blast of cosmic rays, according to a Japanese study that found a relic of the powerful event in cedar trees.
Earth Sciences
Jun 4, 2012
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(Phys.org) -- A telescope buried beneath the South Pole has failed to find any neutrinos accompanying exploding fireballs in space, undermining a leading theory of how cosmic rays are born.
Astronomy
Apr 20, 2012
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The IceCube neutrino telescope encompasses a cubic kilometer of clear Antarctic ice under the South Pole, a volume seeded with an array of 5,160 sensitive digital optical modules (DOMs) that precisely track the direction ...
General Physics
Apr 18, 2012
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(PhysOrg.com) -- For the first time, a telescope has been equipped with a camera based on a new technology that uses semiconductors. This instrument will observe the flashes of light that are produced by gamma rays when they ...
Space Exploration
Nov 7, 2011
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Astronomers using NASA's Fermi Gamma-ray Space Telescope have detected gamma-rays from a nova for the first time, a finding that stunned observers and theorists alike. The discovery overturns the notion that novae explosions ...
Astronomy
Aug 12, 2010
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Stefan Funk wants to improve ground-based gamma ray imaging systems. Today's best instruments have their limits, Funk noted, and newer, more sensitive equipment is required to enter the next stage of astrophysical research. ...
General Physics
Apr 13, 2010
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(PhysOrg.com) -- New images from NASA's Fermi Gamma-ray Space Telescope show where supernova remnants emit radiation a billion times more energetic than visible light. The images bring astronomers a step closer to understanding ...
Astronomy
Feb 16, 2010
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High-energy bursts of gamma rays typically occur far out in space, perhaps near black holes or other high-energy cosmic phenomena. So imagine scientists' surprise in the mid-1990s when they found these powerful gamma ray ...
Space Exploration
Feb 2, 2010
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In all directions of the sky, cosmic rays rocket through space with incredible speed. These “rays”—which mostly consist of protons—are some of the most energetic particles in the universe. For nearly 100 years, they ...
Astronomy
Jan 8, 2010
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(PhysOrg.com) -- A thin rain of charged particles continually bombards our atmosphere from outer space. The mysterious particles were first detected 100 years ago but until 10 years ago when a new type of telescope began ...
Astronomy
Dec 7, 2009
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