Nature Astronomy, Published online: 20 January 2025; doi:10.1038/s41550-024-02467-6

The symmetron model is one of the most compelling theories of dark energy and it has been tested in a laboratory experiment based on a magnetically levitated force sensor. Although no evidence of dark energy has been found in the experiment, the constraints on the symmetron parameter space have been tightened by more than six orders of magnitude.

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