Posts Tagged ‘Fermi telescope’
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In this illustration, one photon (purple) carries a million times the energy of another (yellow). Some theorists predict travel delays for higher-energy photons, which interact more strongly with the proposed frothy nature of space-time. Yet Fermi data on two photos from a gamma-ray burst fail to show this effect, eliminating some approaches to a new theory of gravity. (Credit: NASA/Sonoma State University/Aurore Simonnet)
STANFORD (US)—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 fires of debate among physicists over Einstein’s special theory of relativity because one of the photons possessed a million times more energy than the other. Continue…
Friday, October 30, 2009 5:47 - 2 Comments
Science & Technology - Mar 11, 2009 14:16 - 0 Comments
Fermi telescope captures ‘whopper’ gamma-ray burst
STANFORD (US)—Just months after its launch, the Fermi gamma-ray telescope has revealed the most massive gamma-ray blast ever detected, painting a new picture of our high-energy universe. The mind-boggling blast exceeded the power of nearly 9,000 ordinary supernovae. (more…)
