I describe the universe, yet I am not a star. I unify forces that seem so far. What am I?

Category: Knowledge · Difficulty: hard

Hint: Think of Einstein's groundbreaking theories.

Answer

Theory of relativity

Explanation

The theory of relativity fundamentally changed our understanding of space, time, and gravity.

This is a hard knowledge riddle — a tricky one that takes a little thought. The answer is Theory of relativity.

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