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Einstein was right | Einstein's Cosmic Speed Limit

Einsteins_Cosmic_Speed_Limit_512x288_webIn its first year of operations, NASA’s Fermi Gamma-ray Space Telescope has mapped the entire sky with unprecedented resolution and sensitivity in gamma-rays, the highest-energy form of light. On May 10, 2009 a pair of gamma-ray photons reached Fermi only 900 milliseconds apart after traveling for 7 billion years. Fermi’s measurement gives us rare experimental evidence that space-time is smooth as Einstein predicted, and has shut the door on several approaches to gravity where space-time is foamy enough to interfere strongly with light.

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For more information. Stanford university researches Download full video. Duration: 5.8 minutes Available formats: 512×288 (29.97 fps) MPEG-1   38 MB 320×180 (29.97 fps) MPEG-4   27 MB 640×360 (29.97 fps) MPEG-4   67 MB 960×540 (29.97 fps) MPEG-4   208 MB 1280×720 (30 fps) QT         423 MB 346×236 (29.92 fps) WMV         38 MB 320×180 PNG           223 KB 160×80 PNG           59 KB 80×40 PNG           16 KB 346×260 JPEG         107 KB

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