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Have you ever seen a red moon? It's a sight that usually happens only a couple times a year. What causes a red moon? The ancient Incan people believed that when the moon turned blood-red, it was being eaten by a jaguar. Today we understand that the moon turns red as it passes through the Earth's shadow, or umbra, during a lunar eclipse. For a total lunar eclipse to happen, the Earth, sun, and moon must align precisely. Because it does not happen very often, the sight of a lunar eclipse is as marvelous today as when the ancient Incan people gazed upon it hundreds of years ago.
The author includes a diagram of the text. What does the diagram show?
- dates when a red moon will appear
- the position of the sun, Earth, and moon during a red moon
- how a red moon looks to the human eye
- an picture of the red moon from space