Magnetic fields in infant universe may have been billions of times weaker than a fridge magnet
The magnetic fields that formed in the very early stages of the universe may have been billions of times weaker than a small fridge magnet, with strengths comparable to magnetism generated by neurons in the human brain. Yet, despite such weakness, quantifiable traces of their existence still remain in the cosmic web, the visible cosmic structures connected throughout the universe.
phys.org
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