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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