A Magnetic Tunnel Surrounds the Earth

The sky as it would appear in radio polarized waves. The Van-Gogh-like lines show magnetic field orientation. Image Credit: Pixabay/wal_172619, with edits by J. West.

What if our eyes could see radio waves?

If we could, we might be able to look up into the sky and see a tunnel of rope-like filaments made of radio waves. The structure would be about 1,000 light-years long and would be about 350 light-years away.

This tunnel explains two of the brightest radio features in the sky.

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