Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish may stoke the ...
General Physics
Oct 28, 2009
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During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. It captured more than one thousand discrete sources of gamma rays -- the highest-energy ...
Astronomy
Oct 28, 2009
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(PhysOrg.com) -- A suffragette poem, penned by a world-famous children’s author and kept privately at a University of Manchester Hall of Residence for over a century, has been made available online.
Other
Oct 12, 2009
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The existence of black holes is one of the most amazing and bizarre predictions of Einstein's theory of gravity. Despite his original misgivings about their reality, massive black hole holes are today believed to lie at the ...
Astronomy
Aug 18, 2009
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(PhysOrg.com) -- Since the early days of quantum mechanics, scientists have been trying to understand the many strange implications of the theory: superpositions, wave-particle duality, and the observer’s role in measurements, ...
Quantum mechanics and Einstein's theory of general relativity are both extremely accurate theories of how the universe works, but all attempts to combine the two into a unified theory have ended in failure. When physicists ...
Quantum Physics
Aug 17, 2009
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(AP) -- The family of physicist Stephen Hawking expects him to recover fully from a chest infection that has left him hospitalized, Cambridge University said Tuesday.
Other
Apr 21, 2009
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(PhysOrg.com) -- "In many ways, the standard model of cosmology works very well," Jose Cembranos tells PhysOrg. "However, there are very basic features that we just do not know. We have dark energy and dark matter. They dictate ...
(PhysOrg.com) -- Usually, we think of spacetime as being four-dimensional, with three dimensions of space and one dimension of time. However, this Euclidean perspective is just one of many possible multi-dimensional varieties ...
