Dark Matter’s Secret Force Could Reshape Our Understanding of the Universe

A new study finds that a hidden long-range attractive force on dark matter may not speed up cosmic structure growth.

By modeling dark matter as effectively losing mass over time, the researchers showed the interaction usually suppresses large-scale structure formation.

The result suggests that an extra dark-matter force does not automatically make the Universe clumpier.

This narrows how physicists interpret cosmological tensions and dark matter’s role in precision cosmology.