I chart the stars but don’t move, I help navigate the unknown, I can be measured in degrees. What am I?

Category: Science · Difficulty: hard

Hint: Think about the framework used in astronomy.

Answer

A celestial sphere

Explanation

A celestial sphere is an imaginary sphere surrounding Earth onto which all celestial bodies can be projected.

This is a hard science riddle — a tricky one that takes a little thought. The answer is A celestial sphere.

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