If he did so as a child, his mother would make him stand in front of a mirror to see who the negativity actually reflected on.

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The moon "shines" in reflected sunlight, so it is basically a weak mirror that is safe for Hubble to observe.

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The sidewalks were gray and uneven, and the sky looked like a mirror without a tain, the place where everything should have been reflected but where, in the end, nothing was.

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