Hipparchus
2nd century Greek astronomer, geographer and mathematician
- Fame61.3
- Momentum0.0
- Turkey rank#200
Source-basedFalling
- Fame61.3
- Momentum0.0
- Turkey rank#200
- Scientists rank#250
- Wikipedia10.7K
Lived -190–-120, aged 70Turkey
TurkeySummary
Updated 2026-06-08
He stumbled onto precession — the slow wobble of Earth's axis — while mapping stars with a precision no one had managed before, and in doing so cracked open the architecture of the sky.
Biography
About
Born around 190 BC in Nicaea, Hipparchus worked as an astronomer between 162 and 127 BC, likely dying on Rhodes. He built the first quantitative models for the Sun and Moon that actually survived scrutiny, drawing on centuries of Babylonian observations and Greek predecessors like Meton and Eratosthenes. Along the way he developed trigonometry and constructed its tables, solved problems of spherical geometry, compiled the western world's first comprehensive star catalog, and possibly invented the astrolabe and armillary sphere. He measured Earth's precession, contributed an atomist theory of l…
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The six component signals behind the Fame score, and their ranks across the leaderboards.
Fame
Falling61.3
Composite of search demand, mentions, audience & graph footprint.
Score components
Historical24.4
Now attention5.2
Source confidence60.0
Completeness70.0
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- WikidataHigh confidencewikidata · wikidata.org
- WikipediaHigh confidencewikipedia · en.wikipedia.org
- Pantheon 2.0High confidencedatabase · pantheon.world
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