DID colossal spinning loops of energy whip up the magnetic fields that thread through galaxies and may even stretch across intergalactic space? That’s the idea being put forward to explain the universe’s mysterious magnetic fields.
“Wherever we look, we find a magnetic field,” says Mark Wyman, a cosmologist at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada. “But nobody can explain where they came from.”
Galactic fields have a strength of about 10-10 tesla – one-hundred-thousandth of Earth’s magnetic field – and cosmologists calculate that they could have been amplified from even weaker “seed fields” in…
