RétroFutura : la chasse aux ondes gravitationnelles depuis 20 ans
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RétroFutura : 20 ans de chasse aux ondes gravitationnelles
futura-sciences.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from futura-sciences.com Daily Mail and Mail on Sunday newspapers.
La Nasa se lance dans la chasse aux doubles trous noirs géants
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Many theories of the early universe predict that the cosmos should be flooded with cracks in space-time, called cosmic strings, but no cosmic strings have been detected yet. Now, a new proposal suggests that we may need to look for them not through traditional astronomy, but through their gravitational-wave signature, which may persist in space-time long after the cosmic string has vanished.
When the universe wasn t even a second old, it underwent the most radical and transformative phase transitions of its existence a feat not repeated even until the present day, billions of years later. These phase transitions completely reorganized the universe as the (hypothetical) unified force splintered off into the separate fundamental forces: gravity, the strong nuclear force, the weak nuclear force and electromagnetism.