We still don't have a more precise value for "Big G"

Despite decades of effort, physicists still cannot pin down a more precise value for Big G, the gravitational constant, which remains the least accurately measured fundamental constant in physics. The current uncertainty of 2.2 parts per 100,000 (220 ppm) means that experiments measuring the same constant can yield conflicting results by more than 10 times the reported error bars, slowing progress in fields from geophysics to cosmology. This stubborn gap persists even after 13 major experiments since 2000, each failing to improve precision beyond 20 ppm.