The Sun's bubble protects our solar system
The Sun creates a vast, protective bubble called the heliosphere, shielding our solar system from dangerous cosmic rays and helping to foster conditions for life.
Our solar system is encased in a massive, protective bubble called the heliosphere, created by the Sun's solar wind. This bubble acts as a crucial shield, deflecting about 90 percent of dangerous galactic cosmic rays – high-energy particles from distant supernovae – that would otherwise bombard us. Without it, these particles could disrupt spacecraft electronics and increase radiation risks for life.
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