Mysteries of the Sun

Heliosphere

The heliosphere is the outer atmosphere of the Sun and marks the edge of the Sun’s magnetic influence in space. The solar wind that streams out in all directions from the rotating Sun is a magnetic plasma, and it fills the vast space between the planets in our solar sys tem. The magnetic plasma from the Sun doesn’t mix with the magnetic plasma between the stars in our galaxy, so the solar wind carves out a bubble-like atmosphere that shields our solar system from the majority of galactic cosmic rays.

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