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Early people engraved patterns of lines on animal bones to keep track of the phases of the moon.
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It took place over many centuries. Alignments of the stones at Stonehenge mark the rising and setting points of the sun of the solstices.
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The temple of Amen-Ra at Karnak, Egypt was built so that its main axis point to the sunset at the summer solstice.
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The oldest known recording of a lunar eclipse took place at Ur more than 4,000 years ago
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Hesiod's poem "The Works and Days" contains practical astronomical advice for navigation and for agricultural activities.
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His model was the forerunner of later Greek attempts to explain the heavens is non-mythological terms
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His reasoned that it would have taken millennia for the annual Nile flood to have produced the Nile Delta.
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Eratosthenes uses observation of the altitude of the Sun to find the circumference of the Earth
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Plains Indians of North America built medicine wheels, monuments made of piles of stones.
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The appearance of Comet Halley in 1066 was considered an ill omen for Harold, King of England.
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The development of astronomy was aided by the birth of universities at Bologna, Oxford, Paris, and a few other European cities.
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From his almanac, Columbus knew that a lunar eclipse would occur on Feb. 29.
