Gravitational Waves Detected at LIGO
                            Researchers from the Laser Interferometer 
Gravitational-wave Observatory (LIGO) and from the Virgo interferometer 
report in Physical Review Letters
 the first direct detection of gravitational waves—faint distortions in 
the geometry of spacetime that were predicted by Einstein in 1916.
                           
                              A Physics Viewpoint
 commentary by Emanuele Berti of the University of Mississippi discusses
 the findings and explains why they will open a new era of observational
 astrophysics.
                           
                              APS News is also providing additional coverage of this groundbreaking discovery.                             
 
 
 
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