Focus

solar observatory

Discovery
Discovery

Ancient Humans Built Observatory in Desert 2,300 Years Ago That Tells Exact Date Using Sun—But How?

Ancient Humans Built Observatory in Desert 2,300 Years Ago That Tells Exact Date Using Sun—But How?
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Discovery
Discovery

Ancient Humans Built Observatory in Desert 2,300 Years Ago That Tells Exact Date Using Sun—But How?

Ancient Humans Built Observatory in Desert 2,300 Years Ago That Tells Exact Date Using Sun—But How?
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