A new gravity sensor used atoms’ weird quantum behavior to peer underground
Such devices promise to be more accurate and stable in the long run than other gravity probes
![a quantum gravity sensor comprised of a black box connected to a cylinder sits on a sidewalk](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/02/022422_mt_quantum-gravity-sensor_feat.jpg?fit=1030%2C580&ssl=1)
Quantum gravity sensors, like the one pictured, can detect objects hidden below ground using the quantum behavior of frigid, free-falling atoms.
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