(Phys.org) —How much light has been emitted by all galaxies since the cosmos began? After all, every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies that ever existed ...
Astronomy
May 24, 2013
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(Phys.org)—Grade-school science teachers sometimes hand out "mystery boxes" containing ramps, barriers and a loose marble. By rotating the boxes and feeling the marble hang up or drop, the students try to deduce what's ...
Astronomy
Dec 27, 2012
22
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(Phys.org)—Until recently, the years 774 and 775 were best known for Charlemagne's victory over the Lombards. But earlier this year, a team of scientists in Japan discovered a baffling spike in carbon-14 deposits within ...
Astronomy
Nov 30, 2012
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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
11
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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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1
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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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
2
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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
7
1
(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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