How did scientists boost the spacecraft juno on its way to jupiter, it overcome the gravitonal pull of the sun?

With the help of gravitational slingshot.

Explanation:

The scientists utilized the gravitational slingshot to boost the spacecraft Juno on its way to Jupiter, and at the same time assisting it to get rid of the Sun's gravitational pull. The Juno refers to the NASA space probe, which is orbiting around Jupiter. The Juno was launched in 2011 and comprises the maximum speed of 265000 kilometers in an hour.

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