Space history timeline
2 records
150s BCE
1 record
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150 BCE
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Antikythera mechanism dates to the late Hellenistic period
The National Archaeological Museum dates the mechanism and its astronomical inscriptions to around 150–100 BCE.
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130s BCE
1 record
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135 BCE
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Hipparchus identifies precession
Hipparchus identified precession of the equinoxes and estimated the Moon’s distance.
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