<ul><li>Physicists have set a new upper bound on the interaction strength of dark matter by simulating the collision of two clouds of interstellar plasma.</li><li>The study conducted by researchers at Ruhr University Bochum, CINECA, and Instituto Superior Tecnico could challenge existing theories about dark matter, which accounts for over 85% of the mass in the universe.</li><li>The research focused on dark matter interactions in the Bullet Cluster, ruling out significant dark electromagnetic forces and placing constraints on the dark electromagnetic coupling constant.</li><li>The findings suggest that dark electromagnetic interactions must be weaker than previously thought, leading to the need to reconsider many simple dark matter theories.</li></ul>

Plasma physics sets upper limit on the strength of ‘dark electromagnetism’

Discover more