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Scientists have discovered a human-made barrier around Earth

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protecting against the natural particle radiation in space.

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They believe the bubble was formed

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by very low frequency waves, or VLFs.

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VLFs have been found to interact with the particles in space, affecting how and where they move.

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affecting how and where they move.

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VLFs are used for radio communications, including with submarines,

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because they can penetrate deep into the ocean.

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The waves can also travel far into the environment around Earth.

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By understanding more about how VLF transmissions help shape our space environment,

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we learn more about this complex region surrounding us.

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The more we know, the more situational awareness we have

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to protect our satellites from natural radiation in space.

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