How researchers propose to search for dark matter. The torsion balance is a geometrically asymmetric structure with a hollow “spherical shell” on the left and a “solid sphere” on the right. The impact ...

Study authors Hunter Schweiger (left) and Ash Robbins. Imagine balancing a ruler vertically in the palm of your hand: you have to constantly pay attention to the angle of the ruler and make many small ...

A tabletop instrument sensitive enough to measure a twist smaller than a trillionth of a degree has just become the world’s most powerful direct probe of ultralight dark matter. In a study released in ...