Final answer:
A lunar eclipse occurs when the Earth passes between the Sun and the Moon, blocking the sunlight and casting a shadow on the Moon, making it appear darker or reddish.
Step-by-step explanation:
The passing of the moon through the Earth's shadow, as seen at night, is a phenomenon known as a lunar eclipse. This event occurs when the Earth comes between the Sun and the Moon, blocking the Sun's light and casting a shadow on the Moon. During a lunar eclipse, one may observe the Moon appearing darker or taking on a reddish color. This happens because the Earth's atmosphere bends some sunlight, particularly the red portion, into the Earth's shadow and onto the Moon.
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