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Scientists have discovered a human-made barrier around Earth
protecting against the natural particle radiation in space.
They believe the bubble was formed
by very low frequency waves, or VLFs.
VLFs have been found to interact with the particles in space, affecting how and where they move.
affecting how and where they move.
VLFs are used for radio communications, including with submarines,
because they can penetrate deep into the ocean.
The waves can also travel far into the environment around Earth.
By understanding more about how VLF transmissions help shape our space environment,
we learn more about this complex region surrounding us.
The more we know, the more situational awareness we have
to protect our satellites from natural radiation in space.
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