The strength of gravity has been measured to new precision
Pinpointing Big G could help refine mass measurements for Earth and other celestial objects
![gravity illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/08/082718_MT_gravity-constant_feat.jpg?fit=860%2C460&ssl=1)
HOMING IN Gravity (illustrated here bending spacetime) has been notoriously hard to measure. Now two new lab experiments estimate the strength of gravity, or Big G, with record precision.
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