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Stefan Ballmer quoted in Guardian article on 4th LIGO detection

September 27, 2017

LIGO's fourth detection of gravitational waves from a black-hole merger, which occurred on August 14th, was announced at a meeting of the G7 science ministers in Turin. This detection is the first to also have been picked up by the Virgo detector, located near Pisa, Italy. This third detector (in addition to Hanford, Washington and Livingston, Louisiana) allows astronomers to measure gravitational waves in three dimensions for the first time. Stefan Ballmer was quoted in an article at