<ul><li>The largest magnetic fields in the universe may have found themselves charged up when the first stars began to shine.</li><li>The radiation from the first stars pushed on the dust grains, creating an electrical current and generating a weak but large-scale magnetic field.</li><li>These magnetic fields were initially very weak but grew in size through dynamo mechanisms, stretching for thousands of light-years.</li><li>Researchers suggest further investigation through simulations to understand the evolution of these magnetic fields in the early universe.</li></ul>

The early universe may have had giant batteries of dust

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