On August 21, a total solar eclipse will be visible across parts of the United States.
As the Earth and moon sweep through space in their annual journey around the sun, the three bodies align in such a way that the Earth passes into the shadow of the moon. Observers then witness a sun that is gradually covered and uncovered by the moon’s disk – a spectacular celestial event.
But until astronomers were able to explain this phenomenon, a solar eclipse could be a terrifying event. In many cultures throughout human history, the sun was seen as an entity

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