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Allignments of the stones mark the rising and setting of the sun.
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To mark the axis to the sunset, temple of Amen-Ra at Karnak was built.
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Chinese astronomers recorded 900 solar and 600 lunar eclipses over a period of 2,600 years.
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Hesiod describes practical uses for astronomy using a poem "The works and days"
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Xenphones concludes the earth is very old.
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Aristarchus finds relative dimensions of solar system.
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Eratosthenes finds the circumference of earth in 280 BC
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Building of the bighorn medicine wheel.
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Chinese recorded Supernova that produced crab nebula. Visible in the daytime.
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Comet Hailey was considered an ill omen for King Harold, who was killed in the invasion of England
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Establishment of first universities in europe.
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Columbus uses lunar eclipse prediction to influence Arawaks