The researchers determined that the precession of the pulsar's orbital axis advances by 4.77 degrees per year, plus or minus 0.66 degrees. (sciencemag.org)
Calculations based on Einstein's theory predicted it should advance by 5.07 degrees per year, well within the margin of error. (sciencemag.org)
Current field change is 0.5 degree per year. (realclimate.org)