I’m estimated to be around 13.8 billion years old, yet I can’t tell you my birthday. What am I?
Category: Science · Difficulty: medium
Hint: I encompass everything from galaxies to particles.
Answer
The Universe
Explanation
The universe is the vast expanse of space-time that contains all of existence, estimated to be 13.8 billion years old.
This is a medium science riddle — a moderate challenge for most people. The answer is The Universe.
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