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