I am the echo of the past, telling tales of stars long gone. What am I?
Category: Science · Difficulty: medium
Hint: Consider how light travels across vast distances.
Answer
Light from distant stars
Explanation
Light from stars takes time to reach us, allowing us to observe their past; other waves do not have this property.
This is a medium science riddle — a moderate challenge for most people. The answer is Light from distant stars.
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