This undated photo shows physicist Albert Einstein, author of the theory of relativity. LIGO, the highly specialized space observatories at Hanford in Washington and in Louisiana, detected gravitational waves 100 years after Einstein predicted their existence in 1916.
This undated photo shows physicist Albert Einstein, author of the theory of relativity. LIGO, the highly specialized space observatories at Hanford in Washington and in Louisiana, detected gravitational waves 100 years after Einstein predicted their existence in 1916. Associated Press file
This undated photo shows physicist Albert Einstein, author of the theory of relativity. LIGO, the highly specialized space observatories at Hanford in Washington and in Louisiana, detected gravitational waves 100 years after Einstein predicted their existence in 1916. Associated Press file