English: Cumulative shift in the periastron period in seconds for the binary star system PSR B1913+16 as the system loses energy by gravitational wave emission. Red points are experimental data, and the blue line is the shift predicted by relativity. Error bars are shown, but are generally too small to be seen as distinct for most points.

Data from J. M. Weisberg and J. H. Taylor, Relativistic Binary Pulsar B1913+16: Thirty Years of Observations and Analysis , July 2004.