Hipparchus identifies precession
Approximate date · Calendar as reported in the source (not converted) · Date as reported
Hipparchus identified precession of the equinoxes and estimated the Moon’s distance.
- Type
- astronomical observation
- Category
- astronomy measurement
- Organization
- Hipparchus
- Participants
- Hipparchus
- Destination
- moon
- Target body
- Moon
Sources and attribution
- NASA Goddard — Historical astronomy timeline (opens in a new tab) — Factual summary; source attribution retained.