Moon set, stars twinkled.

Meaning: This means the moon went below the horizon, and the stars shined with a flickering light.

Choice of Words: Moon is the natural satellite of the earth that reflects light from the sun. Set means to go below the horizon. Stars are celestial bodies that emit light and heat. Twinkled means to shine with a flickering light. When you put them together, "Moon set, stars twinkled" means the natural satellite of the earth that reflects light from the sun went below the horizon, and the celestial bodies that emit light and heat shined with a flickering light.

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