Thursday/ when gravity makes waves

It takes a fine instrument to detect gravitational waves : the the Laser Interferometer Gravitational-Wave Observatory or LIGO.  Check out this report in the Science section of the New York Times, of the first confirmed reading of gravitational waves (in Sept 2015). Einstein predicted that gravitational waves could come about during some cataclysmic events in the universe, such as two black holes that collide.

2-12-2016 11-18-19 PM

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