C.V. Vishveshwara in 2007 in Oak Park, Illinois. Namitha Vishveshwara For a scientist, few things are sweeter than data from an experiment that confirms a theoretical prediction. Frequently, however, scientists don't live long enough to savor that reward. Take Albert Einstein's prediction about gravitational waves. Einstein postulated their existence in 1916, but they weren't detected until a hundred years later, long after the great physicist had died. C.V. Vishveshwara was one of the lucky ones. He got to enjoy what Einstein had missed, and the detection of gravitational waves verified a theoretical prediction that Vishveshwara himself had made nearly half a century earlier.