Importance of Heliosphere

 If there was no Heliosphere, then life would have been impossible to form due to intense Cosmic radiation.

The charged particles formed by the solar winds forms a protective bubble around the star and therefore to all the bodies revolving around it. This is called Heliosphere. The bubble's distance is three times the distance to Pluto.

Our Heliosphere acts as a giant shield, protecting the planets from galactic cosmic radiation. In addition to this, Earth has it's own magnetic field providing shield from solar radiation.

In the absence of Heliosphere, cosmic radiation will sweep in, which is much stronger than solar radiation, weakening or possibly destroying the planets magnetic shield therefore providing bad condition for the life to raise in the first place.