Physicists have narrowed the mass range for hypothetical dark matter axions
If they exist, the subatomic particles could be the source of the universe’s elusive mass
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/03/030520_ec_axion_feat.jpg?fit=1028%2C579&ssl=1)
The ADMX experiment (shown) has ruled out another swath of potential masses for particles known as axions that could make up dark matter.
Nick Du