The strength of gravity has been measured to new precision
Pinpointing Big G could help refine mass measurements for Earth and other celestial objects

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.
vchal/Shutterstock
This article is only available to Science News subscribers.
Subscribers, enter your e-mail address to access our archives.
