I revolve without motion, I change yet stay the same, I’m a friend to both day and night. What am I?

Category: Science · Difficulty: medium

Hint: Think about movements in space.

Answer

A planet's orbit

Explanation

A planet's orbit describes its path around a star, changing position relative to others while maintaining a consistent cycle.

This is a medium science riddle — a moderate challenge for most people. The answer is A planet's orbit.

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