What effect does a significantly denser cloud encounter have on the heliosphere's protective boundary?

Answer

It significantly compresses the heliosphere, decreasing shielding

When the heliosphere encounters a denser medium like the LLCC, its size shrinks, which consequently alters and reduces the level of shielding provided against galactic cosmic rays.

What effect does a significantly denser cloud encounter have on the heliosphere's protective boundary?
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