I keep the planets in motion and have been understood by few. What am I?

Category: Science · Difficulty: hard

Hint: I am why you stay grounded and why planets orbit stars.

Answer

Gravity's influence

Explanation

Gravity is the force that attracts two bodies toward each other, keeping celestial bodies in orbit.

This is a hard science riddle — a tricky one that takes a little thought. The answer is Gravity's influence.

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